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Class 10 Mathematics Hard Quiz

Level 24 • 50/50 questions • 30 seconds per question.

Level readiness 50/50 Questions
Time Left 25:00 30 sec/question
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Question 1 / 50 0 score
Answered 0/50 Correct 0 Time 25:00

किसी परवलय का सममिति अक्ष (x=4) है और एक शून्यक (-2) है। दूसरा शून्यक क्या होगा?

The axis of symmetry of a parabola is (x=4) and one zero is (-2). What will be the other zero?

Explanation opens after your attempt
Correct Answer

A. (10)

Step 1

Concept

The average of the two zeroes is (4), so the other zero is (10). Tip: connect the axis of symmetry with the midpoint of zeroes.

Step 2

Why this answer is correct

The correct answer is A. (10). The average of the two zeroes is (4), so the other zero is (10). Tip: connect the axis of symmetry with the midpoint of zeroes.

Step 3

Exam Tip

दोनों शून्यकों का औसत (4) है इसलिए दूसरा शून्यक (10) होगा। टिप: सममिति अक्ष को शून्यकों के मध्य मान से जोड़ें।

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यदि (p(x)=(x+6)2(x-2)) है तो ग्राफ कहाँ स्पर्श करेगा और कहाँ काटेगा?

If (p(x)=(x+6)2(x-2)), where will the graph touch and where will it cross?

Explanation opens after your attempt
Correct Answer

B. (x=-6) पर स्पर्श और (x=2) पर कटानTouches at (x=-6) and crosses at (x=2)

Step 1

Concept

The even-power factor ((x+6)2) gives touching and the single factor (x-2) gives crossing. Tip: identify graph behavior from the power of the factor.

Step 2

Why this answer is correct

The correct answer is B. (x=-6) पर स्पर्श और (x=2) पर कटान / Touches at (x=-6) and crosses at (x=2). The even-power factor ((x+6)2) gives touching and the single factor (x-2) gives crossing. Tip: identify graph behavior from the power of the factor.

Step 3

Exam Tip

सम घात वाला कारक ((x+6)2) स्पर्श देता है और एकल कारक (x-2) कटान देता है। टिप: कारक की घात से ग्राफ का व्यवहार पहचानें।

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यदि परवलय के शून्यक (-7) और (5) हैं तथा वह ऊपर की ओर खुलता है तो (x=-1) पर ग्राफ कहाँ होगा?

If a parabola has zeroes (-7) and (5) and opens upward, where will the graph be at (x=-1)?

Explanation opens after your attempt
Correct Answer

B. (x)-अक्ष के नीचेBelow the (x)-axis

Step 1

Concept

(x=-1) lies between the zeroes and an upward-opening parabola is below the axis there. Tip: check the sign region between zeroes.

Step 2

Why this answer is correct

The correct answer is B. (x)-अक्ष के नीचे / Below the (x)-axis. (x=-1) lies between the zeroes and an upward-opening parabola is below the axis there. Tip: check the sign region between zeroes.

Step 3

Exam Tip

(x=-1) दोनों शून्यकों के बीच है और ऊपर खुलने वाले परवलय में बीच का भाग नीचे होता है। टिप: शून्यकों के बीच संकेत क्षेत्र देखें।

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यदि (p(x)=-(x+5)(x-1)) है तो (-5<x<1) में ग्राफ (x)-अक्ष के किस ओर होगा?

If (p(x)=-(x+5)(x-1)), on which side of the (x)-axis will the graph lie for (-5<x<1)?

Explanation opens after your attempt
Correct Answer

A. ऊपरAbove

Step 1

Concept

In this interval the first factor is positive and the second is negative, so the outside negative makes the value positive. Tip: check each factor's sign separately.

Step 2

Why this answer is correct

The correct answer is A. ऊपर / Above. In this interval the first factor is positive and the second is negative, so the outside negative makes the value positive. Tip: check each factor's sign separately.

Step 3

Exam Tip

इस अंतराल में पहला कारक धनात्मक और दूसरा ऋणात्मक है इसलिए बाहर का ऋण चिन्ह मान को धनात्मक बनाता है। टिप: हर कारक का चिह्न अलग जांचें।

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यदि (p(x)=x-2-6kx+9k-2) है तो ग्राफ (x)-अक्ष को किस (x)-मान पर स्पर्श करेगा?

If (p(x)=x-2-6kx+9k-2), at which (x)-value will the graph touch the (x)-axis?

Explanation opens after your attempt
Correct Answer

B. (x=3k)

Step 1

Concept

It is ((x-3k)2), so the repeated zero is (3k). Tip: identify the perfect square form quickly.

Step 2

Why this answer is correct

The correct answer is B. (x=3k). It is ((x-3k)2), so the repeated zero is (3k). Tip: identify the perfect square form quickly.

Step 3

Exam Tip

यह ((x-3k)2) है इसलिए दोहराया शून्यक (3k) है। टिप: पूर्ण वर्ग रूप को तुरंत पहचानें।

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यदि (p(x)=x-2-(u+v)x+uv) है तो ग्राफ के (x)-अक्ष कटान कौन से होंगे?

If (p(x)=x-2-(u+v)x+uv), what will be the (x)-axis intersections of the graph?

Explanation opens after your attempt
Correct Answer

A. ((u,0)) और ((v,0))((u,0)) and ((v,0))

Step 1

Concept

It is ((x-u)(x-v)), so the zeroes are (u) and (v). Tip: write each zero as the point ((x,0)).

Step 2

Why this answer is correct

The correct answer is A. ((u,0)) और ((v,0)) / ((u,0)) and ((v,0)). It is ((x-u)(x-v)), so the zeroes are (u) and (v). Tip: write each zero as the point ((x,0)).

Step 3

Exam Tip

यह ((x-u)(x-v)) है इसलिए शून्यक (u) और (v) हैं। टिप: शून्यक को ((x,0)) बिंदु के रूप में लिखें।

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किसी परवलय का एक शून्यक (11) है और सममिति अक्ष (x=3) है। दूसरा शून्यक क्या होगा?

A parabola has one zero (11) and axis of symmetry (x=3). What will be the other zero?

Explanation opens after your attempt
Correct Answer

A. (-5)

Step 1

Concept

The average of the two zeroes is (3), so the other zero is (-5). Tip: set \(\frac{a+b}{2}\) equal to the axis of symmetry.

Step 2

Why this answer is correct

The correct answer is A. (-5). The average of the two zeroes is (3), so the other zero is (-5). Tip: set \(\frac{a+b}{2}\) equal to the axis of symmetry.

Step 3

Exam Tip

दो शून्यकों का औसत (3) है इसलिए दूसरा शून्यक (-5) होगा। टिप: \(\frac{a+b}{2}\) को सममिति अक्ष के बराबर रखें।

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यदि (p(-8)=0), (p(-2)>0), (p(3)=0) और (p(9)<0) है तो दिए गए शून्यकों का योग क्या है?

If (p(-8)=0), (p(-2)>0), (p(3)=0) and (p(9)<0), what is the sum of the given zeroes?

Explanation opens after your attempt
Correct Answer

A. (-5)

Step 1

Concept

The given zeroes are (-8) and (3), so their sum is (-5). Tip: take only the (x)-values where (p(x)=0).

Step 2

Why this answer is correct

The correct answer is A. (-5). The given zeroes are (-8) and (3), so their sum is (-5). Tip: take only the (x)-values where (p(x)=0).

Step 3

Exam Tip

दिए गए शून्यक (-8) और (3) हैं इसलिए योग (-5) है। टिप: केवल (p(x)=0) वाले (x)-मान लें।

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यदि (p(x)=x-3-25x) है तो ग्राफ (x)-अक्ष को कितने अलग बिंदुओं पर काटेगा?

If (p(x)=x-3-25x), at how many distinct points will the graph cut the (x)-axis?

Explanation opens after your attempt
Correct Answer

C. तीनThree

Step 1

Concept

(x-3-25x=x(x-5)(x+5)), so there are three distinct zeroes. Tip: first take out the common factor.

Step 2

Why this answer is correct

The correct answer is C. तीन / Three. (x-3-25x=x(x-5)(x+5)), so there are three distinct zeroes. Tip: first take out the common factor.

Step 3

Exam Tip

(x-3-25x=x(x-5)(x+5)) है इसलिए तीन अलग शून्यक हैं। टिप: पहले सामान्य गुणनखंड निकालें।

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यदि (p(x)=(x+1)2(x-8)2) है तो ग्राफ (x)-अक्ष के साथ कैसा व्यवहार करेगा?

If (p(x)=(x+1)2(x-8)2), how will the graph behave with the (x)-axis?

Explanation opens after your attempt
Correct Answer

B. दोनों शून्यकों पर स्पर्श करेगाIt will touch at both zeroes

Step 1

Concept

Both factors have even powers, so the graph touches at both places. Tip: an even-power zero usually gives touching, not crossing.

Step 2

Why this answer is correct

The correct answer is B. दोनों शून्यकों पर स्पर्श करेगा / It will touch at both zeroes. Both factors have even powers, so the graph touches at both places. Tip: an even-power zero usually gives touching, not crossing.

Step 3

Exam Tip

दोनों कारक सम घात में हैं इसलिए दोनों स्थानों पर स्पर्श होगा। टिप: सम घात वाला शून्यक सामान्यतः कटान नहीं बल्कि स्पर्श देता है।

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यदि (p(x)=(x-4)(x+7)3) है तो अलग शून्यक कौन से हैं?

If (p(x)=(x-4)(x+7)3), what are the distinct zeroes?

Explanation opens after your attempt
Correct Answer

A. (4) और (-7)(4) and (-7)

Step 1

Concept

The zeroes are (4) and (-7), but (-7) is repeated. Tip: count repetition once for distinct zeroes.

Step 2

Why this answer is correct

The correct answer is A. (4) और (-7) / (4) and (-7). The zeroes are (4) and (-7), but (-7) is repeated. Tip: count repetition once for distinct zeroes.

Step 3

Exam Tip

शून्यक (4) और (-7) हैं पर (-7) दोहराया गया है। टिप: अलग शून्यक में दोहराव को एक बार गिनें।

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यदि परवलय के (x)-अक्ष कटान ((-11,0)) और ((5,0)) हैं तो मध्यबिंदु का निर्देशांक क्या है?

If the (x)-axis intersections of a parabola are ((-11,0)) and ((5,0)), what is the coordinate of the midpoint?

Explanation opens after your attempt
Correct Answer

A. ((-3,0))

Step 1

Concept

The midpoint is (\left\(\frac{-11+5}{2},0\right\)=(-3,0)). Tip: on the (x)-axis the midpoint has (y=0).

Step 2

Why this answer is correct

The correct answer is A. ((-3,0)). The midpoint is (\left\(\frac{-11+5}{2},0\right\)=(-3,0)). Tip: on the (x)-axis the midpoint has (y=0).

Step 3

Exam Tip

मध्यबिंदु (\left\(\frac{-11+5}{2},0\right\)=(-3,0)) है। टिप: (x)-अक्ष पर मध्यबिंदु का (y)-मान (0) रहता है।

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यदि ग्राफ (x=-12), (x=-3), (x=8) पर (x)-अक्ष को काटता है तो शून्यकों की परास क्या है?

If a graph cuts the (x)-axis at (x=-12), (x=-3), (x=8), what is the range of the zeroes?

Explanation opens after your attempt
Correct Answer

C. (20)

Step 1

Concept

The range is the difference between the greatest and smallest zero, (8-(-12)=20). Tip: range is not negative.

Step 2

Why this answer is correct

The correct answer is C. (20). The range is the difference between the greatest and smallest zero, (8-(-12)=20). Tip: range is not negative.

Step 3

Exam Tip

परास सबसे बड़े और सबसे छोटे शून्यक का अंतर है (8-(-12)=20)। टिप: परास ऋणात्मक नहीं होती।

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यदि (p(x)=x-2-8x-33) है तो ग्राफ के (x)-अक्ष कटान कौन से हैं?

If (p(x)=x-2-8x-33), what are the (x)-axis intersections of the graph?

Explanation opens after your attempt
Correct Answer

A. ((11,0)) और ((-3,0))((11,0)) and ((-3,0))

Step 1

Concept

(x-2-8x-33=(x-11)(x+3)), so the zeroes are (11) and (-3). Tip: form ((x,0)) points from factors.

Step 2

Why this answer is correct

The correct answer is A. ((11,0)) और ((-3,0)) / ((11,0)) and ((-3,0)). (x-2-8x-33=(x-11)(x+3)), so the zeroes are (11) and (-3). Tip: form ((x,0)) points from factors.

Step 3

Exam Tip

(x-2-8x-33=(x-11)(x+3)) है इसलिए शून्यक (11) और (-3) हैं। टिप: गुणनखंडों से बिंदु ((x,0)) बनाएं।

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यदि ग्राफ (y)-अक्ष को ((0,0)) पर छूता है तो शून्यकों के बारे में कौन सा निष्कर्ष सही है?

If a graph touches the (y)-axis at ((0,0)), which conclusion about zeroes is correct?

Explanation opens after your attempt
Correct Answer

A. (0) शून्यक है क्योंकि बिंदु (x)-अक्ष पर भी है(0) is a zero because the point is also on the (x)-axis

Step 1

Concept

The origin lies on both axes, so (p(0)=0). Tip: treat ((0,0)) as a special point.

Step 2

Why this answer is correct

The correct answer is A. (0) शून्यक है क्योंकि बिंदु (x)-अक्ष पर भी है / (0) is a zero because the point is also on the (x)-axis. The origin lies on both axes, so (p(0)=0). Tip: treat ((0,0)) as a special point.

Step 3

Exam Tip

मूल बिंदु दोनों अक्षों पर होता है इसलिए (p(0)=0) है। टिप: ((0,0)) को विशेष बिंदु मानें।

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यदि (p(x)=x-2+14x+49) है तो ग्राफ (x)-अक्ष को किस बिंदु पर स्पर्श करेगा?

If (p(x)=x-2+14x+49), at which point will the graph touch the (x)-axis?

Explanation opens after your attempt
Correct Answer

A. ((-7,0))

Step 1

Concept

(x-2+14x+49=(x+7)2), so the touching point is ((-7,0)). Tip: in a perfect square, change the sign to get the zero.

Step 2

Why this answer is correct

The correct answer is A. ((-7,0)). (x-2+14x+49=(x+7)2), so the touching point is ((-7,0)). Tip: in a perfect square, change the sign to get the zero.

Step 3

Exam Tip

(x-2+14x+49=(x+7)2) है इसलिए स्पर्श बिंदु ((-7,0)) है। टिप: पूर्ण वर्ग में चिह्न बदलकर शून्यक मिलता है।

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यदि ग्राफ के (x)-अक्ष कटान ((m,0)), ((n,0)), ((r,0)) हैं तो शून्यकों का माध्य क्या होगा?

If the (x)-axis intersections of a graph are ((m,0)), ((n,0)), ((r,0)), what will be the mean of the zeroes?

Explanation opens after your attempt
Correct Answer

B. \(\frac{m+n+r}{3}\)

Step 1

Concept

The zeroes are (m), (n), (r), so the mean is \(\frac{m+n+r}{3}\). Tip: take the first coordinate even in symbolic points.

Step 2

Why this answer is correct

The correct answer is B. \(\frac{m+n+r}{3}\). The zeroes are (m), (n), (r), so the mean is \(\frac{m+n+r}{3}\). Tip: take the first coordinate even in symbolic points.

Step 3

Exam Tip

शून्यक (m), (n), (r) हैं इसलिए माध्य \(\frac{m+n+r}{3}\) है। टिप: प्रतीकात्मक बिंदुओं में भी पहला निर्देशांक लें।

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यदि (p(x)=x-2-8x+20) है तो ग्राफ (x)-अक्ष को क्यों नहीं काटेगा?

If (p(x)=x-2-8x+20), why will the graph not cut the (x)-axis?

Explanation opens after your attempt
Correct Answer

A. क्योंकि यह ((x-4)2+4) हैBecause it is ((x-4)2+4)

Step 1

Concept

((x-4)2+4) is always positive, so (p(x)=0) will not occur. Tip: adding a positive number to a square can prevent intersection.

Step 2

Why this answer is correct

The correct answer is A. क्योंकि यह ((x-4)2+4) है / Because it is ((x-4)2+4). ((x-4)2+4) is always positive, so (p(x)=0) will not occur. Tip: adding a positive number to a square can prevent intersection.

Step 3

Exam Tip

((x-4)2+4) हमेशा धनात्मक है इसलिए (p(x)=0) नहीं होगा। टिप: वर्ग में धनात्मक संख्या जुड़ने पर कटान रुक सकता है।

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यदि (p(x)=x(x+4)2(x-6)) है तो (x=-4) पर ग्राफ का व्यवहार क्या होगा?

If (p(x)=x(x+4)2(x-6)), what will be the graph behavior at (x=-4)?

Explanation opens after your attempt
Correct Answer

B. ग्राफ (x)-अक्ष को स्पर्श करेगाThe graph will touch the (x)-axis

Step 1

Concept

((x+4)2) is an even-power factor, so the graph touches at (x=-4). Tip: power (2) shows a repeated zero.

Step 2

Why this answer is correct

The correct answer is B. ग्राफ (x)-अक्ष को स्पर्श करेगा / The graph will touch the (x)-axis. ((x+4)2) is an even-power factor, so the graph touches at (x=-4). Tip: power (2) shows a repeated zero.

Step 3

Exam Tip

((x+4)2) सम घात का कारक है इसलिए (x=-4) पर स्पर्श होगा। टिप: घात (2) दोहराया शून्यक दिखाती है।

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यदि परवलय के शून्यक (c-7) और (c+3) हैं तो सममिति अक्ष कौन सा होगा?

If the zeroes of a parabola are (c-7) and (c+3), what will be its axis of symmetry?

Explanation opens after your attempt
Correct Answer

A. (x=c-2)

Step 1

Concept

The axis of symmetry is at the average of the zeroes, (\frac{(c-7)+(c+3)}{2}=c-2). Tip: the average rule also works with symbols.

Step 2

Why this answer is correct

The correct answer is A. (x=c-2). The axis of symmetry is at the average of the zeroes, (\frac{(c-7)+(c+3)}{2}=c-2). Tip: the average rule also works with symbols.

Step 3

Exam Tip

सममिति अक्ष शून्यकों के औसत पर है (\frac{(c-7)+(c+3)}{2}=c-2)। टिप: प्रतीकों में भी औसत का नियम लागू होता है।

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यदि ग्राफ के शून्यक (-6), (2), (9) हैं तो (x)-अक्ष कटान बिंदुओं का सही समूह कौन सा है?

If the zeroes of a graph are (-6), (2), (9), which is the correct set of (x)-axis intersection points?

Explanation opens after your attempt
Correct Answer

B. ((-6,0)), ((2,0)), ((9,0))

Step 1

Concept

A zero (r) gives the point ((r,0)). Tip: write the zero as the first coordinate.

Step 2

Why this answer is correct

The correct answer is B. ((-6,0)), ((2,0)), ((9,0)). A zero (r) gives the point ((r,0)). Tip: write the zero as the first coordinate.

Step 3

Exam Tip

शून्यक (r) का बिंदु ((r,0)) होता है। टिप: शून्यक को पहले निर्देशांक में लिखें।

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यदि (p(x)=(x+5)(x-3)(x-9)) है तो (3<x<9) में (p(x)) का चिह्न क्या होगा?

If (p(x)=(x+5)(x-3)(x-9)), what will be the sign of (p(x)) for (3<x<9)?

Explanation opens after your attempt
Correct Answer

B. ऋणात्मकNegative

Step 1

Concept

In this interval the first two factors are positive and the third is negative, so the product is negative. Tip: check factor signs separately.

Step 2

Why this answer is correct

The correct answer is B. ऋणात्मक / Negative. In this interval the first two factors are positive and the third is negative, so the product is negative. Tip: check factor signs separately.

Step 3

Exam Tip

इस अंतराल में पहले दो कारक धनात्मक और तीसरा ऋणात्मक है इसलिए गुणनफल ऋणात्मक है। टिप: कारकों के चिह्न अलग-अलग जांचें।

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यदि (p(x)=x-2-9x+k) का एक शून्यक (4) है तो दूसरा शून्यक और कटान बिंदु क्या होंगे?

If (p(x)=x-2-9x+k) has one zero (4), what will be the other zero and intersection points?

Explanation opens after your attempt
Correct Answer

A. दूसरा (5), कटान ((4,0)), ((5,0))Other (5), intersections ((4,0)), ((5,0))

Step 1

Concept

In the quadratic, the sum of zeroes is (9), so the other zero is (5). Tip: quickly convert a zero to ((x,0)).

Step 2

Why this answer is correct

The correct answer is A. दूसरा (5), कटान ((4,0)), ((5,0)) / Other (5), intersections ((4,0)), ((5,0)). In the quadratic, the sum of zeroes is (9), so the other zero is (5). Tip: quickly convert a zero to ((x,0)).

Step 3

Exam Tip

द्विघात में शून्यकों का योग (9) है इसलिए दूसरा शून्यक (5) है। टिप: शून्यक को तुरंत ((x,0)) में बदलें।

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यदि ग्राफ (x=-8) और (x=8) पर (x)-अक्ष को काटता है तो कौन सा कथन सबसे सही है?

If a graph cuts the (x)-axis at (x=-8) and (x=8), which statement is most correct?

Explanation opens after your attempt
Correct Answer

B. शून्यक परस्पर विपरीत हैं और योग (0) हैThe zeroes are opposites and their sum is (0)

Step 1

Concept

The zeroes (-8) and (8) are opposite numbers. Tip: opposite zeroes are equally distant from the (y)-axis.

Step 2

Why this answer is correct

The correct answer is B. शून्यक परस्पर विपरीत हैं और योग (0) है / The zeroes are opposites and their sum is (0). The zeroes (-8) and (8) are opposite numbers. Tip: opposite zeroes are equally distant from the (y)-axis.

Step 3

Exam Tip

शून्यक (-8) और (8) विपरीत संख्याएँ हैं। टिप: विपरीत शून्यक (y)-अक्ष से समान दूरी पर होते हैं।

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यदि (p(x)=16x-2-9) है तो ग्राफ के (x)-अक्ष कटान कौन से हैं?

If (p(x)=16x-2-9), what are the (x)-axis intersections of the graph?

Explanation opens after your attempt
Correct Answer

A. (\left\(\frac{3}{4},0\right\)) और (\left\(-\frac{3}{4},0\right\))(\left\(\frac{3}{4},0\right\)) and (\left\(-\frac{3}{4},0\right\))

Step 1

Concept

From \(16x^2-9=0\), \(x=\pm\frac{3}{4}\). Tip: treat \(16x^2\) as ((4x)2).

Step 2

Why this answer is correct

The correct answer is A. (\left\(\frac{3}{4},0\right\)) और (\left\(-\frac{3}{4},0\right\)) / (\left\(\frac{3}{4},0\right\)) and (\left\(-\frac{3}{4},0\right\)). From \(16x^2-9=0\), \(x=\pm\frac{3}{4}\). Tip: treat \(16x^2\) as ((4x)2).

Step 3

Exam Tip

\(16x^2-9=0\) से \(x=\pm\frac{3}{4}\) मिलता है। टिप: \(16x^2\) को ((4x)2) समझें।

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यदि (x)-अक्ष से मिलने वाले बिंदु ((-5,0)), ((-5,0)), ((4,0)) लिखे हैं तो अलग वास्तविक शून्यक कितने हैं?

If the points meeting the (x)-axis are written as ((-5,0)), ((-5,0)), ((4,0)), how many distinct real zeroes are there?

Explanation opens after your attempt
Correct Answer

B. दोTwo

Step 1

Concept

((-5,0)) is repeated, so the distinct zeroes are (-5) and (4). Tip: count the same (x)-value once.

Step 2

Why this answer is correct

The correct answer is B. दो / Two. ((-5,0)) is repeated, so the distinct zeroes are (-5) and (4). Tip: count the same (x)-value once.

Step 3

Exam Tip

((-5,0)) दोहराया गया है इसलिए अलग शून्यक (-5) और (4) हैं। टिप: समान (x)-मान को एक बार गिनें।

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यदि (p(x)=x-2+px+q) का ग्राफ ((-6,0)) और ((2,0)) पर (x)-अक्ष को काटता है तो (p) और (q) क्या होंगे?

If the graph of (p(x)=x-2+px+q) cuts the (x)-axis at ((-6,0)) and ((2,0)), what will (p) and (q) be?

Explanation opens after your attempt
Correct Answer

A. (p=4, q=-12)

Step 1

Concept

The zeroes are (-6) and (2), so the polynomial is ((x+6)(x-2)=x-2+4x-12). Tip: form factors from intersections.

Step 2

Why this answer is correct

The correct answer is A. (p=4, q=-12). The zeroes are (-6) and (2), so the polynomial is ((x+6)(x-2)=x-2+4x-12). Tip: form factors from intersections.

Step 3

Exam Tip

शून्यक (-6) और (2) हैं इसलिए बहुपद ((x+6)(x-2)=x-2+4x-12) है। टिप: कटान से गुणनखंड बनाएं।

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यदि परवलय (x)-अक्ष को दो बिंदुओं पर काटता है और (y)-अक्ष को ((0,18)) पर काटता है तो वास्तविक शून्यकों की संख्या क्या है?

If a parabola cuts the (x)-axis at two points and cuts the (y)-axis at ((0,18)), what is the number of real zeroes?

Explanation opens after your attempt
Correct Answer

B. दोTwo

Step 1

Concept

Real zeroes are counted from (x)-axis intersections, not from the (y)-axis intercept. Tip: ((0,18)) does not show a zero.

Step 2

Why this answer is correct

The correct answer is B. दो / Two. Real zeroes are counted from (x)-axis intersections, not from the (y)-axis intercept. Tip: ((0,18)) does not show a zero.

Step 3

Exam Tip

वास्तविक शून्यक (x)-अक्ष कटानों से गिने जाते हैं (y)-अक्ष कटान से नहीं। टिप: ((0,18)) शून्यक नहीं बताता।

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यदि (p(x)=x-4-81) है तो वास्तविक (x)-अक्ष कटान कौन से हैं?

If (p(x)=x-4-81), what are the real (x)-axis intersections?

Explanation opens after your attempt
Correct Answer

A. ((-3,0)) और ((3,0))((-3,0)) and ((3,0))

Step 1

Concept

(x-4-81=\(x^2-9\)\(x^2+9\)), and the real zeroes are only \(\pm3\). Tip: \(x^2+9\) gives no real zero.

Step 2

Why this answer is correct

The correct answer is A. ((-3,0)) और ((3,0)) / ((-3,0)) and ((3,0)). (x-4-81=\(x^2-9\)\(x^2+9\)), and the real zeroes are only \(\pm3\). Tip: \(x^2+9\) gives no real zero.

Step 3

Exam Tip

(x-4-81=\(x^2-9\)\(x^2+9\)) है और वास्तविक शून्यक केवल \(\pm3\) हैं। टिप: \(x^2+9\) वास्तविक शून्यक नहीं देता।

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यदि कोई बहुपद (x)-अक्ष को छह अलग बिंदुओं पर काटता है तो न्यूनतम संभावित घात क्या होगी?

If a polynomial cuts the (x)-axis at six distinct points, what is the minimum possible degree?

Explanation opens after your attempt
Correct Answer

C. (6)

Step 1

Concept

For six distinct real zeroes, the degree must be at least (6). Tip: the number of distinct zeroes cannot exceed the degree.

Step 2

Why this answer is correct

The correct answer is C. (6). For six distinct real zeroes, the degree must be at least (6). Tip: the number of distinct zeroes cannot exceed the degree.

Step 3

Exam Tip

छह अलग वास्तविक शून्यकों के लिए घात कम से कम (6) होनी चाहिए। टिप: अलग शून्यकों की संख्या घात से अधिक नहीं हो सकती।

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यदि (p(x)=x-2-2x+10) है तो (p(x)=0) का ग्राफीय अर्थ क्या है?

If (p(x)=x-2-2x+10), what is the graphical meaning of (p(x)=0)?

Explanation opens after your attempt
Correct Answer

C. ग्राफ (x)-अक्ष को नहीं काटताThe graph does not cut the (x)-axis

Step 1

Concept

(x-2-2x+10=(x-1)2+9), so there is no real zero. Tip: an always positive form gives no intersection.

Step 2

Why this answer is correct

The correct answer is C. ग्राफ (x)-अक्ष को नहीं काटता / The graph does not cut the (x)-axis. (x-2-2x+10=(x-1)2+9), so there is no real zero. Tip: an always positive form gives no intersection.

Step 3

Exam Tip

(x-2-2x+10=(x-1)2+9) है इसलिए वास्तविक शून्यक नहीं है। टिप: हमेशा धनात्मक रूप कटान नहीं देता।

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यदि (p(x)=x-3-8x-2+15x) है तो ग्राफ के शून्यकों का समूह कौन सा है?

If (p(x)=x-3-8x-2+15x), what is the set of zeroes of the graph?

Explanation opens after your attempt
Correct Answer

A. (0,3,5)

Step 1

Concept

(x-3-8x-2+15x=x(x-3)(x-5)), so the zeroes are (0,3,5). Tip: first take (x) as the common factor.

Step 2

Why this answer is correct

The correct answer is A. (0,3,5). (x-3-8x-2+15x=x(x-3)(x-5)), so the zeroes are (0,3,5). Tip: first take (x) as the common factor.

Step 3

Exam Tip

(x-3-8x-2+15x=x(x-3)(x-5)) है इसलिए शून्यक (0,3,5) हैं। टिप: पहले (x) सामान्य गुणनखंड निकालें।

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यदि ग्राफ (x)-अक्ष को ((6,0)) और ((18,0)) पर काटता है तो इनके बीच (x=12) की स्थिति क्या है?

If a graph cuts the (x)-axis at ((6,0)) and ((18,0)), what is the position of (x=12) between them?

Explanation opens after your attempt
Correct Answer

A. यह दोनों शून्यकों का मध्य हैIt is the midpoint of the two zeroes

Step 1

Concept

\(12=\frac{6+18}{2}\), so it is the midpoint of the two zeroes. Tip: the midpoint need not be a zero.

Step 2

Why this answer is correct

The correct answer is A. यह दोनों शून्यकों का मध्य है / It is the midpoint of the two zeroes. \(12=\frac{6+18}{2}\), so it is the midpoint of the two zeroes. Tip: the midpoint need not be a zero.

Step 3

Exam Tip

\(12=\frac{6+18}{2}\) है इसलिए यह दोनों शून्यकों का मध्य है। टिप: मध्य बिंदु शून्यक हो यह जरूरी नहीं।

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यदि (p(x)=4x-2-24x+36) है तो ग्राफ (x)-अक्ष से कैसे मिलेगा?

If (p(x)=4x-2-24x+36), how will the graph meet the (x)-axis?

Explanation opens after your attempt
Correct Answer

A. (x=3) पर स्पर्श करेगाIt will touch at (x=3)

Step 1

Concept

(4x-2-24x+36=4(x-3)2), so it touches at (x=3). Tip: the outside (4) does not change the zero.

Step 2

Why this answer is correct

The correct answer is A. (x=3) पर स्पर्श करेगा / It will touch at (x=3). (4x-2-24x+36=4(x-3)2), so it touches at (x=3). Tip: the outside (4) does not change the zero.

Step 3

Exam Tip

(4x-2-24x+36=4(x-3)2) है इसलिए (x=3) पर स्पर्श होगा। टिप: बाहरी (4) शून्यक नहीं बदलता।

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यदि (p(x)=-(x-7)(x+9)) है तो (x<-9) के लिए ग्राफ (x)-अक्ष के किस ओर होगा?

If (p(x)=-(x-7)(x+9)), on which side of the (x)-axis will the graph lie for (x<-9)?

Explanation opens after your attempt
Correct Answer

B. नीचेBelow

Step 1

Concept

For (x<-9), both factors are negative and the outside negative makes the value negative. Tip: check factor signs first.

Step 2

Why this answer is correct

The correct answer is B. नीचे / Below. For (x<-9), both factors are negative and the outside negative makes the value negative. Tip: check factor signs first.

Step 3

Exam Tip

(x<-9) पर दोनों कारक ऋणात्मक हैं और बाहर का ऋण चिन्ह मान को ऋणात्मक बनाता है। टिप: पहले कारकों का चिह्न देखें।

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यदि ग्राफ (x)-अक्ष को ((7,0)) पर छूता है और ((-4,0)) पर काटता है तो शून्यकों का योग क्या है?

If a graph touches the (x)-axis at ((7,0)) and crosses it at ((-4,0)), what is the sum of the zeroes?

Explanation opens after your attempt
Correct Answer

A. (3)

Step 1

Concept

The zeroes are (7) and (-4), so the sum is (3). Tip: count a touching point as a zero too.

Step 2

Why this answer is correct

The correct answer is A. (3). The zeroes are (7) and (-4), so the sum is (3). Tip: count a touching point as a zero too.

Step 3

Exam Tip

शून्यक (7) और (-4) हैं इसलिए योग (3) है। टिप: स्पर्श बिंदु को भी शून्यक मानें।

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यदि ग्राफ के (x)-अक्ष कटान ((0,0)) और ((d,0)) हैं जहाँ \(d\neq0\), तो शून्यकों का गुणनफल क्या होगा?

If the (x)-axis intersections of a graph are ((0,0)) and ((d,0)), where \(d\neq0\), what will be the product of the zeroes?

Explanation opens after your attempt
Correct Answer

B. (0)

Step 1

Concept

The zeroes are (0) and (d), so the product is (0). Tip: if (0) is included, the product is (0).

Step 2

Why this answer is correct

The correct answer is B. (0). The zeroes are (0) and (d), so the product is (0). Tip: if (0) is included, the product is (0).

Step 3

Exam Tip

शून्यक (0) और (d) हैं इसलिए गुणनफल (0) है। टिप: (0) शामिल हो तो गुणनफल (0) होगा।

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यदि (p(x)=x-2-15x+56) है तो ग्राफ के शून्यकों के बीच दूरी कितनी है?

If (p(x)=x-2-15x+56), what is the distance between the zeroes of the graph?

Explanation opens after your attempt
Correct Answer

A. (1)

Step 1

Concept

(x-2-15x+56=(x-7)(x-8)), so the distance is (8-7=1). Tip: find zeroes first and then take distance.

Step 2

Why this answer is correct

The correct answer is A. (1). (x-2-15x+56=(x-7)(x-8)), so the distance is (8-7=1). Tip: find zeroes first and then take distance.

Step 3

Exam Tip

(x-2-15x+56=(x-7)(x-8)) है इसलिए दूरी (8-7=1) है। टिप: पहले शून्यक निकालें फिर दूरी लें।

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यदि परवलय के शून्यक (-4) और (10) हैं तथा वह नीचे की ओर खुलता है तो शून्यकों के बाहर ग्राफ कहाँ होगा?

If a parabola has zeroes (-4) and (10) and opens downward, where will the graph be outside the zeroes?

Explanation opens after your attempt
Correct Answer

B. (x)-अक्ष के नीचेBelow the (x)-axis

Step 1

Concept

For a downward-opening parabola, values outside the zeroes are negative. Tip: opening direction changes sign regions.

Step 2

Why this answer is correct

The correct answer is B. (x)-अक्ष के नीचे / Below the (x)-axis. For a downward-opening parabola, values outside the zeroes are negative. Tip: opening direction changes sign regions.

Step 3

Exam Tip

नीचे खुलने वाले परवलय में शून्यकों के बाहर मान ऋणात्मक होते हैं। टिप: खुलने की दिशा संकेत क्षेत्र बदलती है।

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यदि (p(x)=x-8+1) है तो उसके ग्राफ के वास्तविक शून्यकों की संख्या क्या है?

If (p(x)=x-8+1), what is the number of real zeroes of its graph?

Explanation opens after your attempt
Correct Answer

A. शून्यZero

Step 1

Concept

For real (x), \(x^8\geq0\), so \(x^8+1>0\). Tip: an always positive polynomial does not cut the (x)-axis.

Step 2

Why this answer is correct

The correct answer is A. शून्य / Zero. For real (x), \(x^8\geq0\), so \(x^8+1>0\). Tip: an always positive polynomial does not cut the (x)-axis.

Step 3

Exam Tip

वास्तविक (x) के लिए \(x^8\geq0\), इसलिए \(x^8+1>0\) है। टिप: हमेशा धनात्मक बहुपद (x)-अक्ष को नहीं काटता।

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यदि (p(-9)=0), (p(-4)=2), (p(2)=0), (p(6)=0) है तो कितने दिए गए (x)-मान शून्यक हैं?

If (p(-9)=0), (p(-4)=2), (p(2)=0), (p(6)=0), how many of the given (x)-values are zeroes?

Explanation opens after your attempt
Correct Answer

B. तीनThree

Step 1

Concept

The function value is (0) at (-9), (2), and (6). Tip: do not treat (p(-4)=2) as a zero.

Step 2

Why this answer is correct

The correct answer is B. तीन / Three. The function value is (0) at (-9), (2), and (6). Tip: do not treat (p(-4)=2) as a zero.

Step 3

Exam Tip

(-9), (2), (6) पर फलन मान (0) है। टिप: (p(-4)=2) को शून्यक न मानें।

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यदि (p(x)=x-2-cx) है तो ग्राफ के (x)-अक्ष कटान कौन से होंगे?

If (p(x)=x-2-cx), what will be the (x)-axis intersections of the graph?

Explanation opens after your attempt
Correct Answer

A. ((0,0)) और ((c,0))((0,0)) and ((c,0))

Step 1

Concept

(x-2-cx=x(x-c)), so the zeroes are (0) and (c). Tip: factor out the common (x).

Step 2

Why this answer is correct

The correct answer is A. ((0,0)) और ((c,0)) / ((0,0)) and ((c,0)). (x-2-cx=x(x-c)), so the zeroes are (0) and (c). Tip: factor out the common (x).

Step 3

Exam Tip

(x-2-cx=x(x-c)) है इसलिए शून्यक (0) और (c) हैं। टिप: सामान्य (x) गुणनखंड निकालें।

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यदि ग्राफ (x)-अक्ष को ((-6,0)) और ((14,0)) पर काटता है तो (y)-अक्ष से समान दूरी वाले शून्यक बनाने के लिए कौन सा परिवर्तन चाहिए?

If a graph cuts the (x)-axis at ((-6,0)) and ((14,0)), what change is needed to make the zeroes equally distant from the (y)-axis?

Explanation opens after your attempt
Correct Answer

A. (14) को (6) करना होगा(14) must be changed to (6)

Step 1

Concept

For equal distance from the (y)-axis, zeroes should be opposites, so (6) is needed with (-6). Tip: symmetric zeroes are (a) and (-a).

Step 2

Why this answer is correct

The correct answer is A. (14) को (6) करना होगा / (14) must be changed to (6). For equal distance from the (y)-axis, zeroes should be opposites, so (6) is needed with (-6). Tip: symmetric zeroes are (a) and (-a).

Step 3

Exam Tip

(y)-अक्ष से समान दूरी के लिए शून्यक विपरीत होने चाहिए, इसलिए (-6) के साथ (6) चाहिए। टिप: सममित शून्यक (a) और (-a) होते हैं।

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यदि (p(x)=7(x+3)2(x-10)) है तो ग्राफ कितने अलग बिंदुओं पर (x)-अक्ष से मिलेगा और कौन सा बिंदु स्पर्श होगा?

If (p(x)=7(x+3)2(x-10)), at how many distinct points will the graph meet the (x)-axis and which point will be a touching point?

Explanation opens after your attempt
Correct Answer

A. दो बिंदु, (x=-3) पर स्पर्शTwo points, touching at (x=-3)

Step 1

Concept

The zeroes are (-3) and (10), and ((x+3)2) causes touching at (-3). Tip: the outside (7) does not change the zeroes.

Step 2

Why this answer is correct

The correct answer is A. दो बिंदु, (x=-3) पर स्पर्श / Two points, touching at (x=-3). The zeroes are (-3) and (10), and ((x+3)2) causes touching at (-3). Tip: the outside (7) does not change the zeroes.

Step 3

Exam Tip

शून्यक (-3) और (10) हैं तथा ((x+3)2) के कारण (-3) पर स्पर्श है। टिप: बाहरी (7) शून्यक नहीं बदलता।

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यदि (p(x)=(x-2)(x-5)(x-9)) है तो (2<x<5) में ग्राफ कहाँ होगा?

If (p(x)=(x-2)(x-5)(x-9)), where will the graph be for (2<x<5)?

Explanation opens after your attempt
Correct Answer

A. (x)-अक्ष के ऊपरAbove the (x)-axis

Step 1

Concept

In this interval the signs are (+), (-), (-), so the product is positive. Tip: the product of two negative factors is positive.

Step 2

Why this answer is correct

The correct answer is A. (x)-अक्ष के ऊपर / Above the (x)-axis. In this interval the signs are (+), (-), (-), so the product is positive. Tip: the product of two negative factors is positive.

Step 3

Exam Tip

इस अंतराल में चिह्न (+), (-), (-) हैं इसलिए गुणनफल धनात्मक है। टिप: दो ऋणात्मक कारकों का गुणन धनात्मक होता है।

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यदि (p(x)=x-2+dx+d-2) और \(d\neq0\) है तो ग्राफ (x)-अक्ष को क्यों नहीं काटेगा?

If (p(x)=x-2+dx+d-2) and \(d\neq0\), why will the graph not cut the (x)-axis?

Explanation opens after your attempt
Correct Answer

A. क्योंकि इसका विविक्तकर ऋणात्मक हैBecause its discriminant is negative

Step 1

Concept

The discriminant is \(d^2-4d^2=-3d^2<0\), so there are no real zeroes. Tip: a negative discriminant means no (x)-axis intersection.

Step 2

Why this answer is correct

The correct answer is A. क्योंकि इसका विविक्तकर ऋणात्मक है / Because its discriminant is negative. The discriminant is \(d^2-4d^2=-3d^2<0\), so there are no real zeroes. Tip: a negative discriminant means no (x)-axis intersection.

Step 3

Exam Tip

विविक्तकर \(d^2-4d^2=-3d^2<0\) है इसलिए वास्तविक शून्यक नहीं हैं। टिप: ऋणात्मक विविक्तकर का अर्थ (x)-अक्ष कटान नहीं है।

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यदि किसी परवलय का शीर्ष ((-5,0)) है तो वास्तविक शून्यकों की अलग संख्या क्या होगी?

If the vertex of a parabola is ((-5,0)), what will be the distinct number of real zeroes?

Explanation opens after your attempt
Correct Answer

B. एकOne

Step 1

Concept

The vertex lies on the (x)-axis, so the parabola touches at ((-5,0)). Tip: if the vertex has (y=0), there is one distinct zero.

Step 2

Why this answer is correct

The correct answer is B. एक / One. The vertex lies on the (x)-axis, so the parabola touches at ((-5,0)). Tip: if the vertex has (y=0), there is one distinct zero.

Step 3

Exam Tip

शीर्ष (x)-अक्ष पर है इसलिए परवलय ((-5,0)) पर स्पर्श करेगा। टिप: शीर्ष का (y)-मान (0) हो तो एक अलग शून्यक होता है।

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यदि (p(x)=3x-2+12x+17) है तो ग्राफ (x)-अक्ष के सापेक्ष कैसा होगा?

If (p(x)=3x-2+12x+17), how will the graph be with respect to the (x)-axis?

Explanation opens after your attempt
Correct Answer

C. नहीं काटेगाIt will not cut

Step 1

Concept

The discriminant is (144-204=-60), so there are no real zeroes. Tip: with negative discriminant a parabola does not meet the (x)-axis.

Step 2

Why this answer is correct

The correct answer is C. नहीं काटेगा / It will not cut. The discriminant is (144-204=-60), so there are no real zeroes. Tip: with negative discriminant a parabola does not meet the (x)-axis.

Step 3

Exam Tip

विविक्तकर (144-204=-60) है इसलिए वास्तविक शून्यक नहीं हैं। टिप: ऋणात्मक विविक्तकर पर परवलय (x)-अक्ष से नहीं मिलता।

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यदि (p(x)=x-2-2bx+b-2-16) है तो ग्राफ के शून्यक कौन से होंगे?

If (p(x)=x-2-2bx+b-2-16), what will be the zeroes of the graph?

Explanation opens after your attempt
Correct Answer

A. (b-4) और (b+4)(b-4) and (b+4)

Step 1

Concept

It is ((x-b)2-16), so \(x-b=\pm4\) and the zeroes are (b-4), (b+4). Tip: use difference of squares.

Step 2

Why this answer is correct

The correct answer is A. (b-4) और (b+4) / (b-4) and (b+4). It is ((x-b)2-16), so \(x-b=\pm4\) and the zeroes are (b-4), (b+4). Tip: use difference of squares.

Step 3

Exam Tip

यह ((x-b)2-16) है इसलिए \(x-b=\pm4\) और शून्यक (b-4), (b+4) हैं। टिप: वर्गों के अंतर का उपयोग करें।

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यदि किसी ग्राफ के (x)-अक्ष कटान ((-2,0)), ((4,0)), ((10,0)) हैं तो इनके शून्यकों का माध्य क्या है?

If the (x)-axis intersections of a graph are ((-2,0)), ((4,0)), ((10,0)), what is the mean of their zeroes?

Explanation opens after your attempt
Correct Answer

A. (4)

Step 1

Concept

The mean is \(\frac{-2+4+10}{3}=4\). Tip: first read the (x)-values from intersection points.

Step 2

Why this answer is correct

The correct answer is A. (4). The mean is \(\frac{-2+4+10}{3}=4\). Tip: first read the (x)-values from intersection points.

Step 3

Exam Tip

माध्य \(\frac{-2+4+10}{3}=4\) है। टिप: पहले कटान बिंदुओं से (x)-मान पढ़ें।

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