Question 1/10
Easy Mathematics
Quadratic Equations Methods of Solving Quadratic Equations Class 10 Level 36
यदि \(x^2+10x+k\) एक पूर्ण वर्ग हो और उसका रूप ((x+5)2) हो, तो (k) क्या होगा?
If \(x^2+10x+k\) is a perfect square and its form is ((x+5)2), what is (k)?
Explanation opens after your attempt
Step 1
Concept
((x+5)2=x-2+10x+25), so (k=25). In exams, remember perfect square expansion.
Step 2
Why this answer is correct
The correct answer is A. (25). ((x+5)2=x-2+10x+25), so (k=25). In exams, remember perfect square expansion.
Step 3
Exam Tip
((x+5)2=x-2+10x+25), इसलिए (k=25) है। परीक्षा में पूर्ण वर्ग विस्तार याद रखें।
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Question 2/10
Easy Mathematics
Quadratic Equations Methods of Solving Quadratic Equations Class 10 Level 35
यदि \(x^2-6x+k\) एक पूर्ण वर्ग हो और उसका रूप ((x-3)2) हो, तो (k) क्या होगा?
If \(x^2-6x+k\) is a perfect square and its form is ((x-3)2), what is (k)?
Explanation opens after your attempt
Step 1
Concept
((x-3)2=x-2-6x+9), so (k=9). In exams, remember perfect square expansion.
Step 2
Why this answer is correct
The correct answer is A. (9). ((x-3)2=x-2-6x+9), so (k=9). In exams, remember perfect square expansion.
Step 3
Exam Tip
((x-3)2=x-2-6x+9), इसलिए (k=9) है। परीक्षा में पूर्ण वर्ग विस्तार याद रखें।
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Question 3/10
Medium Mathematics
Quadratic Equations Introduction to Quadratic Equations Class 10 Level 29
किस समीकरण में (b=0) और (c>0) है?
Which equation has (b=0) and (c>0)?
Explanation opens after your attempt
Correct Answer
B. \(5x^2+20=0\)
Step 1
Concept
In \(5x^2+20=0\), the (x) term is absent, so (b=0) and (c=20>0). Treat a missing term coefficient as (0).
Step 2
Why this answer is correct
The correct answer is B. \(5x^2+20=0\). In \(5x^2+20=0\), the (x) term is absent, so (b=0) and (c=20>0). Treat a missing term coefficient as (0).
Step 3
Exam Tip
\(5x^2+20=0\) में (x) पद अनुपस्थित है, इसलिए (b=0) और (c=20>0) है। अनुपस्थित पद का गुणांक (0) मानें।
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Question 4/10
Medium Mathematics
Quadratic Equations Introduction to Quadratic Equations Class 10 Level 28
किस समीकरण में (b=0) और (c<0) है?
Which equation has (b=0) and (c<0)?
Explanation opens after your attempt
Correct Answer
B. \(3x^2-12=0\)
Step 1
Concept
In \(3x^2-12=0\), (b=0) and (c=-12). Treat the missing (x) term coefficient as (0).
Step 2
Why this answer is correct
The correct answer is B. \(3x^2-12=0\). In \(3x^2-12=0\), (b=0) and (c=-12). Treat the missing (x) term coefficient as (0).
Step 3
Exam Tip
\(3x^2-12=0\) में (b=0) और (c=-12) है। अनुपस्थित (x) पद का गुणांक (0) मानें।
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Question 5/10
Easy Mathematics
Quadratic Equations Introduction to Quadratic Equations Class 10 Level 30
समीकरण \(x^2+7x=0\) में (c) का मान क्या है?
What is the value of (c) in \(x^2+7x=0\)?
Explanation opens after your attempt
Step 1
Concept
Comparing with standard form, the constant term is absent, so (c=0). Treat a missing constant term as (0).
Step 2
Why this answer is correct
The correct answer is D. (0). Comparing with standard form, the constant term is absent, so (c=0). Treat a missing constant term as (0).
Step 3
Exam Tip
मानक रूप से मिलाने पर स्थिर पद अनुपस्थित है इसलिए (c=0) है। अनुपस्थित स्थिर पद को (0) मानें।
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Question 6/10
Easy Mathematics
Quadratic Equations Introduction to Quadratic Equations Class 10 Level 30
समीकरण \(x^2-7=0\) में रैखिक पद कौन-सा है?
What is the linear term in \(x^2-7=0\)?
Explanation opens after your attempt
Step 1
Concept
There is no (x) term, so the linear term is considered (0x). A missing term has coefficient (0).
Step 2
Why this answer is correct
The correct answer is C. (0x). There is no (x) term, so the linear term is considered (0x). A missing term has coefficient (0).
Step 3
Exam Tip
इसमें (x) वाला पद नहीं है इसलिए रैखिक पद (0x) माना जाता है। अनुपस्थित पद का गुणांक (0) होता है।
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Question 7/10
Easy Mathematics
Quadratic Equations Introduction to Quadratic Equations Class 10 Level 29
समीकरण \(x^2-13x=0\) में कौन सा पद अनुपस्थित है?
Which term is absent in \(x^2-13x=0\)?
Explanation opens after your attempt
Correct Answer
C. स्थिर पद/Constant term
Step 1
Concept
It can be written as \(x^2-13x+0=0\). So the constant term is absent.
Step 2
Why this answer is correct
The correct answer is C. स्थिर पद / Constant term. It can be written as \(x^2-13x+0=0\). So the constant term is absent.
Step 3
Exam Tip
इसे \(x^2-13x+0=0\) लिखा जा सकता है। इसलिए स्थिर पद अनुपस्थित है।
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Question 8/10
Easy Mathematics
Quadratic Equations Introduction to Quadratic Equations Class 10 Level 29
समीकरण \(3x^2-21=0\) में (a), (b), (c) कौन से हैं?
What are (a), (b), (c) in \(3x^2-21=0\)?
Explanation opens after your attempt
Correct Answer
A. (3,0,-21)
Step 1
Concept
Write it as \(3x^2+0x-21=0\). So (a=3), (b=0), (c=-21).
Step 2
Why this answer is correct
The correct answer is A. (3,0,-21). Write it as \(3x^2+0x-21=0\). So (a=3), (b=0), (c=-21).
Step 3
Exam Tip
इसे \(3x^2+0x-21=0\) लिखें। इसलिए (a=3), (b=0), (c=-21) हैं।
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Question 9/10
Easy Mathematics
Quadratic Equations Introduction to Quadratic Equations Class 10 Level 28
समीकरण \(x^2+10x=0\) में कौन सा पद अनुपस्थित है?
Which term is absent in \(x^2+10x=0\)?
Explanation opens after your attempt
Correct Answer
C. स्थिर पद/Constant term
Step 1
Concept
It is treated as \(x^2+10x+0=0\). So the constant term is absent.
Step 2
Why this answer is correct
The correct answer is C. स्थिर पद / Constant term. It is treated as \(x^2+10x+0=0\). So the constant term is absent.
Step 3
Exam Tip
इसे \(x^2+10x+0=0\) माना जाता है। इसलिए स्थिर पद अनुपस्थित है।
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Question 10/10
Easy Mathematics
Quadratic Equations Introduction to Quadratic Equations Class 10 Level 28
समीकरण \(7x^2-14=0\) में (a), (b), (c) कौन से हैं?
What are (a), (b), (c) in \(7x^2-14=0\)?
Explanation opens after your attempt
Correct Answer
A. (7,0,-14)
Step 1
Concept
Write it as \(7x^2+0x-14=0\). Then (a=7), (b=0), (c=-14).
Step 2
Why this answer is correct
The correct answer is A. (7,0,-14). Write it as \(7x^2+0x-14=0\). Then (a=7), (b=0), (c=-14).
Step 3
Exam Tip
इसे \(7x^2+0x-14=0\) लिखें। इससे (a=7), (b=0), (c=-14) मिलते हैं।
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