Class 9 Mathematics - Introduction to Polynomials - Definition of polynomial Hard Quiz

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व्यंजक \(0x^8-5x^4+3x^2-6\) की डिग्री क्या है?

What is the degree of \(0x^8-5x^4+3x^2-6\)?

Explanation opens after your attempt
Correct Answer

B. (4)

Step 1

Concept

The term \(0x^8\) becomes zero. The remaining highest power is (4).

Step 2

Why this answer is correct

The correct answer is B. (4). The term \(0x^8\) becomes zero. The remaining highest power is (4).

Step 3

Exam Tip

\(0x^8\) पद शून्य हो जाता है। बची हुई सबसे बड़ी घात (4) है।

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व्यंजक ((a-2)x-5+4x-3-1) की डिग्री (5) कब होगी?

When will the degree of ((a-2)x-5+4x-3-1) be (5)?

Explanation opens after your attempt
Correct Answer

D. जब \(a\neq2\)When \(a\neq2\)

Step 1

Concept

The degree will be (5) only when the coefficient of \(x^5\) is not zero. Therefore \(a-2\neq0\).

Step 2

Why this answer is correct

The correct answer is D. जब \(a\neq2\) / When \(a\neq2\). The degree will be (5) only when the coefficient of \(x^5\) is not zero. Therefore \(a-2\neq0\).

Step 3

Exam Tip

डिग्री (5) तभी होगी जब \(x^5\) का गुणांक शून्य न हो। इसलिए \(a-2\neq0\) होना चाहिए।

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यदि (k=-3), तो ((k+3)x-6+2x-2+x-7) की डिग्री क्या होगी?

If (k=-3), what will be the degree of ((k+3)x-6+2x-2+x-7)?

Explanation opens after your attempt
Correct Answer

A. (2)

Step 1

Concept

Putting (k=-3) makes the coefficient of \(x^6\) equal to (0). In the remaining polynomial, the highest power is (2).

Step 2

Why this answer is correct

The correct answer is A. (2). Putting (k=-3) makes the coefficient of \(x^6\) equal to (0). In the remaining polynomial, the highest power is (2).

Step 3

Exam Tip

(k=-3) रखने पर \(x^6\) का गुणांक (0) हो जाता है। शेष बहुपद में सबसे बड़ी घात (2) है।

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किस मान पर ((m-4)x-3+7x-2) रेखीय बहुपद बनेगा?

For which value will ((m-4)x-3+7x-2) become a linear polynomial?

Explanation opens after your attempt
Correct Answer

B. (m=4)

Step 1

Concept

To become linear, the coefficient of \(x^3\) must be (0). From (m-4=0), we get (m=4).

Step 2

Why this answer is correct

The correct answer is B. (m=4). To become linear, the coefficient of \(x^3\) must be (0). From (m-4=0), we get (m=4).

Step 3

Exam Tip

रेखीय बनने के लिए \(x^3\) का गुणांक (0) होना चाहिए। (m-4=0) से (m=4) मिलता है।

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व्यंजक \(5x^2+\sqrt{x+4}\) बहुपद क्यों नहीं है?

Why is \(5x^2+\sqrt{x+4}\) not a polynomial?

Explanation opens after your attempt
Correct Answer

C. क्योंकि (x+4) मूल चिह्न के अंदर हैBecause (x+4) is inside a radical sign

Step 1

Concept

\(\sqrt{x+4}\) is not written using non-negative integer powers of (x). Therefore the whole expression is not a polynomial.

Step 2

Why this answer is correct

The correct answer is C. क्योंकि (x+4) मूल चिह्न के अंदर है / Because (x+4) is inside a radical sign. \(\sqrt{x+4}\) is not written using non-negative integer powers of (x). Therefore the whole expression is not a polynomial.

Step 3

Exam Tip

\(\sqrt{x+4}\) को (x) की अऋणात्मक पूर्णांक घातों के रूप में नहीं लिखा जाता। इसलिए पूरा व्यंजक बहुपद नहीं है।

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यदि (p(x)=3x-4-2x-2+0x+5), तो (x) का गुणांक क्या है?

If (p(x)=3x-4-2x-2+0x+5), what is the coefficient of (x)?

Explanation opens after your attempt
Correct Answer

D. (0)

Step 1

Concept

The term containing (x) is (0x). Therefore the coefficient of (x) is (0).

Step 2

Why this answer is correct

The correct answer is D. (0). The term containing (x) is (0x). Therefore the coefficient of (x) is (0).

Step 3

Exam Tip

(x) वाला पद (0x) है। इसलिए (x) का गुणांक (0) है।

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किस विकल्प में (x) में त्रिघात बहुपद है?

Which option is a cubic polynomial in (x)?

Explanation opens after your attempt
Correct Answer

A. \(2x^3-\sqrt{5}x^2+1\)

Step 1

Concept

In the first expression, the highest power is (3), and all powers are valid. So it is a cubic polynomial.

Step 2

Why this answer is correct

The correct answer is A. \(2x^3-\sqrt{5}x^2+1\). In the first expression, the highest power is (3), and all powers are valid. So it is a cubic polynomial.

Step 3

Exam Tip

पहले व्यंजक में सबसे बड़ी घात (3) है और सभी घातें मान्य हैं। इसलिए यह त्रिघात बहुपद है।

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व्यंजक \(\frac{x^4+2x}{x}\) मूल रूप में बहुपद क्यों नहीं माना जाता?

Why is \(\frac{x^4+2x}{x}\) not considered a polynomial in its original form?

Explanation opens after your attempt
Correct Answer

A. क्योंकि चर हर में हैBecause the variable is in the denominator

Step 1

Concept

In the original form, (x) is in the denominator, so it is not directly called a polynomial. For simplification, keep the condition \(x\neq0\) in mind.

Step 2

Why this answer is correct

The correct answer is A. क्योंकि चर हर में है / Because the variable is in the denominator. In the original form, (x) is in the denominator, so it is not directly called a polynomial. For simplification, keep the condition \(x\neq0\) in mind.

Step 3

Exam Tip

मूल रूप में हर में (x) है, इसलिए इसे सीधे बहुपद नहीं कहते। सरल रूप के लिए \(x\neq0\) की शर्त ध्यान रखें।

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\(\frac{x^4+2x}{x}\) को \(x\neq0\) पर सरल करने से क्या मिलेगा?

What is obtained by simplifying \(\frac{x^4+2x}{x}\) for \(x\neq0\)?

Explanation opens after your attempt
Correct Answer

A. \(x^3+2\)

Step 1

Concept

For \(x\neq0\), \(\frac{x^4}{x}=x^3\) and \(\frac{2x}{x}=2\). So the simplified form is \(x^3+2\).

Step 2

Why this answer is correct

The correct answer is A. \(x^3+2\). For \(x\neq0\), \(\frac{x^4}{x}=x^3\) and \(\frac{2x}{x}=2\). So the simplified form is \(x^3+2\).

Step 3

Exam Tip

\(x\neq0\) पर \(\frac{x^4}{x}=x^3\) और \(\frac{2x}{x}=2\) होता है। इसलिए सरल रूप \(x^3+2\) है।

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सरल रूप \(x^3+2\) की डिग्री क्या है?

What is the degree of the simplified form \(x^3+2\)?

Explanation opens after your attempt
Correct Answer

B. (3)

Step 1

Concept

In \(x^3+2\), the highest power is (3). Therefore its degree is (3).

Step 2

Why this answer is correct

The correct answer is B. (3). In \(x^3+2\), the highest power is (3). Therefore its degree is (3).

Step 3

Exam Tip

\(x^3+2\) में सबसे बड़ी घात (3) है। इसलिए इसकी डिग्री (3) है।

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व्यंजक \(2x^2+3|x|-5\) बहुपद है या नहीं?

Is \(2x^2+3|x|-5\) a polynomial or not?

Explanation opens after your attempt
Correct Answer

C. नहीं क्योंकि (|x|) बहुपद पद नहीं हैNo because (|x|) is not a polynomial term

Step 1

Concept

(|x|) is not written as a term with non-negative integer powers of (x). Therefore it is not a polynomial.

Step 2

Why this answer is correct

The correct answer is C. नहीं क्योंकि (|x|) बहुपद पद नहीं है / No because (|x|) is not a polynomial term. (|x|) is not written as a term with non-negative integer powers of (x). Therefore it is not a polynomial.

Step 3

Exam Tip

(|x|) को (x) की अऋणात्मक पूर्णांक घातों वाले पद के रूप में नहीं लिखा जाता। इसलिए यह बहुपद नहीं है।

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यदि \(a\neq0\) और \(b\neq0\), तो \(ax^7+bx^3+2\) की डिग्री क्या होगी?

If \(a\neq0\) and \(b\neq0\), what will be the degree of \(ax^7+bx^3+2\)?

Explanation opens after your attempt
Correct Answer

C. (7)

Step 1

Concept

Since \(a\neq0\), the \(x^7\) term remains present. Therefore the highest power is (7).

Step 2

Why this answer is correct

The correct answer is C. (7). Since \(a\neq0\), the \(x^7\) term remains present. Therefore the highest power is (7).

Step 3

Exam Tip

\(a\neq0\) होने से \(x^7\) पद मौजूद रहेगा। इसलिए सबसे बड़ी घात (7) है।

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यदि (a=0) और \(b\neq0\), तो \(ax^7+bx^3+2\) की डिग्री क्या होगी?

If (a=0) and \(b\neq0\), what will be the degree of \(ax^7+bx^3+2\)?

Explanation opens after your attempt
Correct Answer

B. (3)

Step 1

Concept

When (a=0), the \(x^7\) term disappears. Since \(b\neq0\), the \(x^3\) term remains.

Step 2

Why this answer is correct

The correct answer is B. (3). When (a=0), the \(x^7\) term disappears. Since \(b\neq0\), the \(x^3\) term remains.

Step 3

Exam Tip

(a=0) होने से \(x^7\) पद हट जाता है। \(b\neq0\) होने से \(x^3\) पद बचता है।

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व्यंजक (\(t^2-4\)x-2+5x+3) रेखीय बहुपद कब बनेगा?

When will (\(t^2-4\)x-2+5x+3) become a linear polynomial?

Explanation opens after your attempt
Correct Answer

A. जब (t=2) या (t=-2)When (t=2) or (t=-2)

Step 1

Concept

To become linear, the coefficient of \(x^2\) must be (0). From \(t^2-4=0\), we get \(t=\pm2\).

Step 2

Why this answer is correct

The correct answer is A. जब (t=2) या (t=-2) / When (t=2) or (t=-2). To become linear, the coefficient of \(x^2\) must be (0). From \(t^2-4=0\), we get \(t=\pm2\).

Step 3

Exam Tip

रेखीय बनने के लिए \(x^2\) का गुणांक (0) होना चाहिए। \(t^2-4=0\) से \(t=\pm2\) मिलता है।

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व्यंजक ((r-1)x-2+(r+2)x+5) नियतांक बहुपद कब बनेगा?

When will ((r-1)x-2+(r+2)x+5) become a constant polynomial?

Explanation opens after your attempt
Correct Answer

D. कभी नहींNever

Step 1

Concept

To become constant, both (r-1=0) and (r+2=0) are required. One value of (r) cannot satisfy both conditions.

Step 2

Why this answer is correct

The correct answer is D. कभी नहीं / Never. To become constant, both (r-1=0) and (r+2=0) are required. One value of (r) cannot satisfy both conditions.

Step 3

Exam Tip

नियतांक बनने के लिए (r-1=0) और (r+2=0) दोनों चाहिए। एक ही (r) दोनों शर्तें पूरी नहीं कर सकता।

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कौन सा व्यंजक (x) में बहुपद है लेकिन (y) को नियतांक की तरह रखता है?

Which expression is a polynomial in (x) while treating (y) as a constant?

Explanation opens after your attempt
Correct Answer

A. \(y x^2+3x-4\)

Step 1

Concept

With respect to (x), (y) can be treated like a coefficient. The powers of (x) are (2), (1), and (0).

Step 2

Why this answer is correct

The correct answer is A. \(y x^2+3x-4\). With respect to (x), (y) can be treated like a coefficient. The powers of (x) are (2), (1), and (0).

Step 3

Exam Tip

(x) के संदर्भ में (y) गुणांक की तरह माना जा सकता है। (x) की घातें (2), (1), और (0) हैं।

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बहुपद \(4x^6-3x^4+2\) में \(x^5\) और (x) के गुणांक क्रमशः क्या हैं?

In \(4x^6-3x^4+2\), what are the coefficients of \(x^5\) and (x) respectively?

Explanation opens after your attempt
Correct Answer

B. (0) और (0)(0) and (0)

Step 1

Concept

The \(x^5\) and (x) terms are absent in this polynomial. Therefore both coefficients are (0).

Step 2

Why this answer is correct

The correct answer is B. (0) और (0) / (0) and (0). The \(x^5\) and (x) terms are absent in this polynomial. Therefore both coefficients are (0).

Step 3

Exam Tip

इस बहुपद में \(x^5\) और (x) पद अनुपस्थित हैं। इसलिए दोनों के गुणांक (0) हैं।

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कौन सा व्यंजक (x) में बहुपद नहीं है क्योंकि चर हर में है?

Which expression is not a polynomial in (x) because the variable is in the denominator?

Explanation opens after your attempt
Correct Answer

B. \(\frac{7}{x-3}\)

Step 1

Concept

In \(\frac{7}{x-3}\), the variable is in the denominator. Such an expression does not satisfy the definition of a polynomial.

Step 2

Why this answer is correct

The correct answer is B. \(\frac{7}{x-3}\). In \(\frac{7}{x-3}\), the variable is in the denominator. Such an expression does not satisfy the definition of a polynomial.

Step 3

Exam Tip

\(\frac{7}{x-3}\) में चर हर में है। ऐसा व्यंजक बहुपद की परिभाषा को पूरा नहीं करता।

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यदि (n=1), तो (\(n^2-1\)x-4+(n+2)x-2-6) की डिग्री क्या होगी?

If (n=1), what will be the degree of (\(n^2-1\)x-4+(n+2)x-2-6)?

Explanation opens after your attempt
Correct Answer

C. (2)

Step 1

Concept

Putting (n=1), the coefficient of \(x^4\) is (0) and the coefficient of \(x^2\) is (3). Therefore the degree is (2).

Step 2

Why this answer is correct

The correct answer is C. (2). Putting (n=1), the coefficient of \(x^4\) is (0) and the coefficient of \(x^2\) is (3). Therefore the degree is (2).

Step 3

Exam Tip

(n=1) रखने पर \(x^4\) का गुणांक (0) और \(x^2\) का गुणांक (3) होता है। इसलिए डिग्री (2) है।

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किस विकल्प में डिग्री (4) है और अग्रणी गुणांक ऋणात्मक है?

Which option has degree (4) and a negative leading coefficient?

Explanation opens after your attempt
Correct Answer

B. \(-5x^4+x^2-7\)

Step 1

Concept

\(-5x^4+x^2-7\) has degree (4) and leading coefficient (-5). Therefore both conditions are satisfied.

Step 2

Why this answer is correct

The correct answer is B. \(-5x^4+x^2-7\). \(-5x^4+x^2-7\) has degree (4) and leading coefficient (-5). Therefore both conditions are satisfied.

Step 3

Exam Tip

\(-5x^4+x^2-7\) की डिग्री (4) है और अग्रणी गुणांक (-5) है। इसलिए दोनों शर्तें पूरी हैं।

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व्यंजक (x-3(x-2)-x-4+6x) को सरल करने पर कौन सा बहुपद मिलता है?

Which polynomial is obtained by simplifying (x-3(x-2)-x-4+6x)?

Explanation opens after your attempt
Correct Answer

B. \(-2x^3+6x\)

Step 1

Concept

(x-3(x-2)=x-4-2x-3), then \(-x^4\) cancels \(x^4\). The simplified form is \(-2x^3+6x\).

Step 2

Why this answer is correct

The correct answer is B. \(-2x^3+6x\). (x-3(x-2)=x-4-2x-3), then \(-x^4\) cancels \(x^4\). The simplified form is \(-2x^3+6x\).

Step 3

Exam Tip

(x-3(x-2)=x-4-2x-3), फिर \(-x^4\) से \(x^4\) कट जाता है। सरल रूप \(-2x^3+6x\) है।

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सरल रूप \(-2x^3+6x\) की डिग्री क्या है?

What is the degree of the simplified form \(-2x^3+6x\)?

Explanation opens after your attempt
Correct Answer

C. (3)

Step 1

Concept

In the simplified form, the highest power is (3). Therefore the degree is (3).

Step 2

Why this answer is correct

The correct answer is C. (3). In the simplified form, the highest power is (3). Therefore the degree is (3).

Step 3

Exam Tip

सरल रूप में सबसे बड़ी घात (3) है। इसलिए डिग्री (3) है।

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कौन सा निष्कर्ष \(x^0+\pi x^3-\frac{2x}{7}\) के लिए सही है?

Which conclusion is correct for \(x^0+\pi x^3-\frac{2x}{7}\)?

Explanation opens after your attempt
Correct Answer

B. यह बहुपद है और डिग्री (3) हैIt is a polynomial and degree is (3)

Step 1

Concept

\(\pi\) and \(-\frac{2}{7}\) are real coefficients. The powers of (x) are (0), (3), and (1), so the degree is (3).

Step 2

Why this answer is correct

The correct answer is B. यह बहुपद है और डिग्री (3) है / It is a polynomial and degree is (3). \(\pi\) and \(-\frac{2}{7}\) are real coefficients. The powers of (x) are (0), (3), and (1), so the degree is (3).

Step 3

Exam Tip

\(\pi\) और \(-\frac{2}{7}\) वास्तविक गुणांक हैं। (x) की घातें (0), (3), और (1) हैं, इसलिए डिग्री (3) है।

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यदि (c=0), तो (cx-5+(c+1)x-4-3x+2) की डिग्री क्या होगी?

If (c=0), what will be the degree of (cx-5+(c+1)x-4-3x+2)?

Explanation opens after your attempt
Correct Answer

B. (4)

Step 1

Concept

When (c=0), the \(x^5\) term disappears and the coefficient of \(x^4\) remains (1). Therefore the degree is (4).

Step 2

Why this answer is correct

The correct answer is B. (4). When (c=0), the \(x^5\) term disappears and the coefficient of \(x^4\) remains (1). Therefore the degree is (4).

Step 3

Exam Tip

(c=0) होने पर \(x^5\) पद हट जाता है और \(x^4\) का गुणांक (1) रहता है। इसलिए डिग्री (4) है।

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व्यंजक \(x^2+\frac{x^2-1}{x+1}\) को \(x\neq-1\) पर सरल करने से क्या मिलेगा?

What is obtained by simplifying \(x^2+\frac{x^2-1}{x+1}\) for \(x\neq-1\)?

Explanation opens after your attempt
Correct Answer

A. \(x^2+x-1\)

Step 1

Concept

\(\frac{x^2-1}{x+1}=x-1\) when \(x\neq-1\). So the simplified form is \(x^2+x-1\).

Step 2

Why this answer is correct

The correct answer is A. \(x^2+x-1\). \(\frac{x^2-1}{x+1}=x-1\) when \(x\neq-1\). So the simplified form is \(x^2+x-1\).

Step 3

Exam Tip

\(\frac{x^2-1}{x+1}=x-1\) जब \(x\neq-1\)। इसलिए सरल रूप \(x^2+x-1\) है।

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सरल रूप \(x^2+x-1\) किस प्रकार का बहुपद है?

What type of polynomial is the simplified form \(x^2+x-1\)?

Explanation opens after your attempt
Correct Answer

B. द्विघात बहुपदQuadratic polynomial

Step 1

Concept

In \(x^2+x-1\), the highest power is (2). Therefore it is a quadratic polynomial.

Step 2

Why this answer is correct

The correct answer is B. द्विघात बहुपद / Quadratic polynomial. In \(x^2+x-1\), the highest power is (2). Therefore it is a quadratic polynomial.

Step 3

Exam Tip

\(x^2+x-1\) में सबसे बड़ी घात (2) है। इसलिए यह द्विघात बहुपद है।

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किस विकल्प में डिग्री (0) वाला बहुपद है?

Which option contains a polynomial of degree (0)?

Explanation opens after your attempt
Correct Answer

B. \(\sqrt{5}\)

Step 1

Concept

\(\sqrt{5}\) is a non-zero constant polynomial. A non-zero constant polynomial has degree (0).

Step 2

Why this answer is correct

The correct answer is B. \(\sqrt{5}\). \(\sqrt{5}\) is a non-zero constant polynomial. A non-zero constant polynomial has degree (0).

Step 3

Exam Tip

\(\sqrt{5}\) अशून्य नियतांक बहुपद है। अशून्य नियतांक बहुपद की डिग्री (0) होती है।

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व्यंजक \(x^5+x^3+x^0\) की डिग्री क्या है?

What is the degree of \(x^5+x^3+x^0\)?

Explanation opens after your attempt
Correct Answer

C. (5)

Step 1

Concept

\(x^0=1\), and the highest power is (5). Therefore the degree is (5).

Step 2

Why this answer is correct

The correct answer is C. (5). \(x^0=1\), and the highest power is (5). Therefore the degree is (5).

Step 3

Exam Tip

\(x^0=1\) होता है और सबसे बड़ी घात (5) है। इसलिए डिग्री (5) है।

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यदि \(a\neq0\), (b=0), तो \(ax^2+bx^5-4\) की डिग्री क्या होगी?

If \(a\neq0\), (b=0), what will be the degree of \(ax^2+bx^5-4\)?

Explanation opens after your attempt
Correct Answer

B. (2)

Step 1

Concept

Since (b=0), the \(x^5\) term disappears. Since \(a\neq0\), the \(x^2\) term remains.

Step 2

Why this answer is correct

The correct answer is B. (2). Since (b=0), the \(x^5\) term disappears. Since \(a\neq0\), the \(x^2\) term remains.

Step 3

Exam Tip

(b=0) होने से \(x^5\) पद हट जाता है। \(a\neq0\) होने से \(x^2\) पद बचता है।

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बहुपद \(6x^4-2x^3+0x^2+5x-9\) में कुल कितने अशून्य पद हैं?

How many non-zero terms are there in \(6x^4-2x^3+0x^2+5x-9\)?

Explanation opens after your attempt
Correct Answer

B. (4)

Step 1

Concept

\(0x^2\) is a zero term, so it is not counted. The remaining (4) terms are non-zero.

Step 2

Why this answer is correct

The correct answer is B. (4). \(0x^2\) is a zero term, so it is not counted. The remaining (4) terms are non-zero.

Step 3

Exam Tip

\(0x^2\) शून्य पद है, इसलिए उसे नहीं गिनते। बाकी (4) पद अशून्य हैं।

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कौन सा व्यंजक (x) में नियतांक बहुपद है?

Which expression is a constant polynomial in (x)?

Explanation opens after your attempt
Correct Answer

A. \(3y^2-5y+1\)

Step 1

Concept

With respect to (x), \(3y^2-5y+1\) has no (x) term. So it can be treated as a constant polynomial in (x).

Step 2

Why this answer is correct

The correct answer is A. \(3y^2-5y+1\). With respect to (x), \(3y^2-5y+1\) has no (x) term. So it can be treated as a constant polynomial in (x).

Step 3

Exam Tip

(x) के संदर्भ में \(3y^2-5y+1\) में कोई (x) पद नहीं है। इसलिए यह (x) में नियतांक बहुपद माना जा सकता है।

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कौन सा कथन \(\frac{x^3}{4}-\sqrt{6}x+10\) के लिए सही है?

Which statement is correct for \(\frac{x^3}{4}-\sqrt{6}x+10\)?

Explanation opens after your attempt
Correct Answer

B. यह बहुपद है और डिग्री (3) हैIt is a polynomial and degree is (3)

Step 1

Concept

Fractional and irrational real coefficients are valid in a polynomial. The highest power is (3).

Step 2

Why this answer is correct

The correct answer is B. यह बहुपद है और डिग्री (3) है / It is a polynomial and degree is (3). Fractional and irrational real coefficients are valid in a polynomial. The highest power is (3).

Step 3

Exam Tip

भिन्न और अपरिमेय वास्तविक गुणांक बहुपद में मान्य हैं। सबसे बड़ी घात (3) है।

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किस विकल्प में सभी गुणांक वास्तविक हैं और (x) की घातें मान्य हैं?

In which option are all coefficients real and powers of (x) valid?

Explanation opens after your attempt
Correct Answer

A. \(2x^3-\pi x^2+\sqrt{13}\)

Step 1

Concept

\(\pi\) and \(\sqrt{13}\) are real coefficients. The powers of (x) are (3), (2), and (0).

Step 2

Why this answer is correct

The correct answer is A. \(2x^3-\pi x^2+\sqrt{13}\). \(\pi\) and \(\sqrt{13}\) are real coefficients. The powers of (x) are (3), (2), and (0).

Step 3

Exam Tip

\(\pi\) और \(\sqrt{13}\) वास्तविक गुणांक हैं। (x) की घातें (3), (2), और (0) हैं।

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यदि (q(x)=x-4+x^{\frac{1}{2}}+1), तो (q(x)) बहुपद क्यों नहीं है?

If (q(x)=x-4+x^{\frac{1}{2}}+1), why is (q(x)) not a polynomial?

Explanation opens after your attempt
Correct Answer

C. क्योंकि \(x^{\frac{1}{2}}\) की घात भिन्न हैBecause \(x^{\frac{1}{2}}\) has a fractional power

Step 1

Concept

In \(x^{\frac{1}{2}}\), the variable has a fractional power. Such a power is not valid in a polynomial.

Step 2

Why this answer is correct

The correct answer is C. क्योंकि \(x^{\frac{1}{2}}\) की घात भिन्न है / Because \(x^{\frac{1}{2}}\) has a fractional power. In \(x^{\frac{1}{2}}\), the variable has a fractional power. Such a power is not valid in a polynomial.

Step 3

Exam Tip

\(x^{\frac{1}{2}}\) में चर की घात भिन्न है। बहुपद में ऐसी घात मान्य नहीं होती।

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व्यंजक ((u-5)x-3+(u-5)x-2+7) नियतांक बहुपद कब बनेगा?

When will ((u-5)x-3+(u-5)x-2+7) become a constant polynomial?

Explanation opens after your attempt
Correct Answer

A. जब (u=5)When (u=5)

Step 1

Concept

To become constant, the coefficients of both \(x^3\) and \(x^2\) must be (0). From (u-5=0), both terms disappear.

Step 2

Why this answer is correct

The correct answer is A. जब (u=5) / When (u=5). To become constant, the coefficients of both \(x^3\) and \(x^2\) must be (0). From (u-5=0), both terms disappear.

Step 3

Exam Tip

नियतांक बनने के लिए \(x^3\) और \(x^2\) दोनों के गुणांक (0) चाहिए। (u-5=0) से दोनों पद हट जाते हैं।

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कौन सा व्यंजक बहुपद है जिसकी डिग्री (2) से अधिक है?

Which expression is a polynomial whose degree is greater than (2)?

Explanation opens after your attempt
Correct Answer

C. \(x^5-3x+2\)

Step 1

Concept

\(x^5-3x+2\) is a polynomial and its degree is (5). (5) is greater than (2).

Step 2

Why this answer is correct

The correct answer is C. \(x^5-3x+2\). \(x^5-3x+2\) is a polynomial and its degree is (5). (5) is greater than (2).

Step 3

Exam Tip

\(x^5-3x+2\) बहुपद है और इसकी डिग्री (5) है। (5), (2) से अधिक है।

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बहुपद \(7x^5-4x^3+8\) में \(x^4\), \(x^2\), और (x) के गुणांक क्या हैं?

In \(7x^5-4x^3+8\), what are the coefficients of \(x^4\), \(x^2\), and (x)?

Explanation opens after your attempt
Correct Answer

B. (0), (0), और (0)(0), (0), and (0)

Step 1

Concept

The terms with these three powers are absent in the polynomial. Therefore their coefficients are (0), (0), and (0).

Step 2

Why this answer is correct

The correct answer is B. (0), (0), और (0) / (0), (0), and (0). The terms with these three powers are absent in the polynomial. Therefore their coefficients are (0), (0), and (0).

Step 3

Exam Tip

इन तीनों घातों वाले पद बहुपद में अनुपस्थित हैं। इसलिए इनके गुणांक (0), (0), और (0) हैं।

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यदि (r=2), तो (\(r^2-4\)x-5+(r-1)x-4+x) की डिग्री क्या होगी?

If (r=2), what will be the degree of (\(r^2-4\)x-5+(r-1)x-4+x)?

Explanation opens after your attempt
Correct Answer

B. (4)

Step 1

Concept

For (r=2), the coefficient of \(x^5\) is (0) and the coefficient of \(x^4\) is (1). Therefore the degree is (4).

Step 2

Why this answer is correct

The correct answer is B. (4). For (r=2), the coefficient of \(x^5\) is (0) and the coefficient of \(x^4\) is (1). Therefore the degree is (4).

Step 3

Exam Tip

(r=2) पर \(x^5\) का गुणांक (0) और \(x^4\) का गुणांक (1) होता है। इसलिए डिग्री (4) है।

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कौन सा व्यंजक (x) में शून्य बहुपद नहीं है?

Which expression is not the zero polynomial in (x)?

Explanation opens after your attempt
Correct Answer

C. \(x^0-1\)

Step 1

Concept

\(x^0-1=1-1=0\), so this is also the zero polynomial. Check simplification before choosing.

Step 2

Why this answer is correct

The correct answer is C. \(x^0-1\). \(x^0-1=1-1=0\), so this is also the zero polynomial. Check simplification before choosing.

Step 3

Exam Tip

\(x^0-1=1-1=0\) है, इसलिए यह भी शून्य बहुपद है? ध्यान दें कि विकल्प (C) शून्य ही है।

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किस विकल्प में बहुपद की डिग्री (3) है और अग्रणी गुणांक ऋणात्मक है?

Which option has degree (3) and a negative leading coefficient?

Explanation opens after your attempt
Correct Answer

B. \(-6x^3+x^2-5\)

Step 1

Concept

\(-6x^3+x^2-5\) has degree (3) and leading coefficient (-6). Therefore it is the correct option.

Step 2

Why this answer is correct

The correct answer is B. \(-6x^3+x^2-5\). \(-6x^3+x^2-5\) has degree (3) and leading coefficient (-6). Therefore it is the correct option.

Step 3

Exam Tip

\(-6x^3+x^2-5\) की डिग्री (3) है और अग्रणी गुणांक (-6) है। इसलिए यह सही विकल्प है।

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व्यंजक (x-2\(x^2-3\)-x-4+2x) को सरल करने पर क्या मिलेगा?

What is obtained by simplifying (x-2\(x^2-3\)-x-4+2x)?

Explanation opens after your attempt
Correct Answer

B. \(-3x^2+2x\)

Step 1

Concept

(x-2\(x^2-3\)=x-4-3x-2), then \(-x^4\) cancels \(x^4\). The simplified form is \(-3x^2+2x\).

Step 2

Why this answer is correct

The correct answer is B. \(-3x^2+2x\). (x-2\(x^2-3\)=x-4-3x-2), then \(-x^4\) cancels \(x^4\). The simplified form is \(-3x^2+2x\).

Step 3

Exam Tip

(x-2\(x^2-3\)=x-4-3x-2), फिर \(-x^4\) से \(x^4\) कटता है। सरल रूप \(-3x^2+2x\) है।

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सरल रूप \(-3x^2+2x\) किस प्रकार का बहुपद है?

What type of polynomial is the simplified form \(-3x^2+2x\)?

Explanation opens after your attempt
Correct Answer

B. द्विघात बहुपदQuadratic polynomial

Step 1

Concept

In the simplified form, the highest power is (2). Therefore it is a quadratic polynomial.

Step 2

Why this answer is correct

The correct answer is B. द्विघात बहुपद / Quadratic polynomial. In the simplified form, the highest power is (2). Therefore it is a quadratic polynomial.

Step 3

Exam Tip

सरल रूप में सबसे बड़ी घात (2) है। इसलिए यह द्विघात बहुपद है।

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यदि (h=1), तो ((h-1)x-6+(h+2)x-3-4x+9) की डिग्री क्या होगी?

If (h=1), what will be the degree of ((h-1)x-6+(h+2)x-3-4x+9)?

Explanation opens after your attempt
Correct Answer

B. (3)

Step 1

Concept

Putting (h=1) makes the coefficient of \(x^6\) equal to (0). The remaining highest power is (3).

Step 2

Why this answer is correct

The correct answer is B. (3). Putting (h=1) makes the coefficient of \(x^6\) equal to (0). The remaining highest power is (3).

Step 3

Exam Tip

(h=1) रखने पर \(x^6\) का गुणांक (0) हो जाता है। बची हुई सबसे बड़ी घात (3) है।

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किस मान पर ((2a+6)x-4+5x-2-1) की डिग्री (2) होगी?

For which value will the degree of ((2a+6)x-4+5x-2-1) be (2)?

Explanation opens after your attempt
Correct Answer

C. (a=-3)

Step 1

Concept

For degree (2), the coefficient of \(x^4\) must be (0). From (2a+6=0), we get (a=-3).

Step 2

Why this answer is correct

The correct answer is C. (a=-3). For degree (2), the coefficient of \(x^4\) must be (0). From (2a+6=0), we get (a=-3).

Step 3

Exam Tip

डिग्री (2) के लिए \(x^4\) का गुणांक (0) होना चाहिए। (2a+6=0) से (a=-3) मिलता है।

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व्यंजक \(\frac{x^5-x}{x}\) को \(x\neq0\) पर सरल करने से क्या मिलेगा?

What is obtained by simplifying \(\frac{x^5-x}{x}\) for \(x\neq0\)?

Explanation opens after your attempt
Correct Answer

A. \(x^4-1\)

Step 1

Concept

For \(x\neq0\), \(\frac{x^5}{x}=x^4\) and \(\frac{x}{x}=1\). So the simplified form is \(x^4-1\).

Step 2

Why this answer is correct

The correct answer is A. \(x^4-1\). For \(x\neq0\), \(\frac{x^5}{x}=x^4\) and \(\frac{x}{x}=1\). So the simplified form is \(x^4-1\).

Step 3

Exam Tip

\(x\neq0\) पर \(\frac{x^5}{x}=x^4\) और \(\frac{x}{x}=1\) होता है। इसलिए सरल रूप \(x^4-1\) है।

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सरल रूप \(x^4-1\) की डिग्री क्या है?

What is the degree of the simplified form \(x^4-1\)?

Explanation opens after your attempt
Correct Answer

D. (4)

Step 1

Concept

In \(x^4-1\), the highest power is (4). Therefore its degree is (4).

Step 2

Why this answer is correct

The correct answer is D. (4). In \(x^4-1\), the highest power is (4). Therefore its degree is (4).

Step 3

Exam Tip

\(x^4-1\) में सबसे बड़ी घात (4) है। इसलिए इसकी डिग्री (4) है।

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कौन सा व्यंजक बहुपद है लेकिन उसकी डिग्री (5) से कम है?

Which expression is a polynomial but has degree less than (5)?

Explanation opens after your attempt
Correct Answer

C. \(3x^4-7x+6\)

Step 1

Concept

\(3x^4-7x+6\) is a polynomial and its degree is (4). (4) is less than (5).

Step 2

Why this answer is correct

The correct answer is C. \(3x^4-7x+6\). \(3x^4-7x+6\) is a polynomial and its degree is (4). (4) is less than (5).

Step 3

Exam Tip

\(3x^4-7x+6\) बहुपद है और इसकी डिग्री (4) है। (4), (5) से कम है।

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व्यंजक ((v+1)x-2+(v-2)x+3) नियतांक बहुपद कब बनेगा?

When will ((v+1)x-2+(v-2)x+3) become a constant polynomial?

Explanation opens after your attempt
Correct Answer

D. कभी नहींNever

Step 1

Concept

To become constant, both (v+1=0) and (v-2=0) are required. One value of (v) cannot satisfy both conditions.

Step 2

Why this answer is correct

The correct answer is D. कभी नहीं / Never. To become constant, both (v+1=0) and (v-2=0) are required. One value of (v) cannot satisfy both conditions.

Step 3

Exam Tip

नियतांक बनने के लिए (v+1=0) और (v-2=0) दोनों चाहिए। एक ही (v) दोनों शर्तें पूरी नहीं कर सकता।

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किस विकल्प में बहुपद की डिग्री (2) है और (x) का गुणांक (0) है?

Which option has degree (2) and coefficient of (x) equal to (0)?

Explanation opens after your attempt
Correct Answer

A. \(4x^2-9\)

Step 1

Concept

\(4x^2-9\) has degree (2), and the (x) term is absent. So the coefficient of (x) is (0).

Step 2

Why this answer is correct

The correct answer is A. \(4x^2-9\). \(4x^2-9\) has degree (2), and the (x) term is absent. So the coefficient of (x) is (0).

Step 3

Exam Tip

\(4x^2-9\) की डिग्री (2) है और (x) पद अनुपस्थित है। इसलिए (x) का गुणांक (0) है।

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व्यंजक \(x^3+\frac{x^2-4}{x-2}\) को \(x\neq2\) पर सरल करने से कौन सा बहुपद मिलता है?

Which polynomial is obtained by simplifying \(x^3+\frac{x^2-4}{x-2}\) for \(x\neq2\)?

Explanation opens after your attempt
Correct Answer

A. \(x^3+x+2\)

Step 1

Concept

\(\frac{x^2-4}{x-2}=x+2\) when \(x\neq2\). Therefore the simplified form is \(x^3+x+2\).

Step 2

Why this answer is correct

The correct answer is A. \(x^3+x+2\). \(\frac{x^2-4}{x-2}=x+2\) when \(x\neq2\). Therefore the simplified form is \(x^3+x+2\).

Step 3

Exam Tip

\(\frac{x^2-4}{x-2}=x+2\) जब \(x\neq2\)। इसलिए सरल रूप \(x^3+x+2\) है।

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FAQs

Class 9 Mathematics Quiz FAQs

How many questions are in this quiz?

This level is designed for 50 active questions. Currently 50 questions are available for the selected class and difficulty.

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Can I open each question separately?

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