Practice focused topic-wise MCQs with answers and explanations for quick revision and exam preparation.
Difficulty select karke sirf is topic ke focused MCQs practice karein. Score, timer aur explanations student-friendly flow me milenge.
Showing 111-120 of 300 questions.
What is the coefficient of (x) in \(3x^2+2x-1\)?
B. (2)
(x) वाले पद (2x) का गुणांक (2) है। परीक्षा में \(x^2\) और (x) के गुणांक अलग रखें। / The coefficient of the (x)-term (2x) is (2). Exam tip: keep the coefficients of \(x^2\) and (x) separate.
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In the standard form \(ax^2+bx+c\), what is (b) for \(7x^2-5x+11\)?
C. (-5)
(b) (x) वाले पद का गुणांक होता है। यहां (x) का गुणांक (-5) है। / (b) is the coefficient of the (x)-term. Here the coefficient of (x) is (-5).
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In the standard form \(ax^2+bx+c\), what is (c) for \(2x^2+9x-4\)?
D. (-4)
(c) स्थिर पद होता है जिसमें (x) नहीं होता। यहां (c=-4) है। / (c) is the constant term without (x). Here (c=-4).
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What is the value of \(2x^2-5x+3\) when (x=-1)?
C. (10)
(2(-1)2-5(-1)+3=2+5+3=10) है। परीक्षा में ऋणात्मक मान को ब्रैकेट में रखें। / (2(-1)2-5(-1)+3=2+5+3=10). Exam tip: put negative values in brackets.
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How many terms are there in \(3x^2-4x+1\)?
C. (3)
पद हैं \(3x^2\), (-4x) और (1)। परीक्षा में चिन्ह सहित पद अलग करें। / The terms are \(3x^2\), (-4x), and (1). Exam tip: separate terms with their signs.
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What is (p) if \(x^2+px+12\) equals ((x+3)(x+4))?
C. (7)
((x+3)(x+4)=x-2+7x+12) होता है। इसलिए (p=7) है। / ((x+3)(x+4)=x-2+7x+12). Therefore (p=7).
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What is (k) if \(x^2-kx+16\) equals ((x-8)(x-2))?
B. (10)
((x-8)(x-2)=x-2-10x+16) है। इसलिए (k=10) होगा। / ((x-8)(x-2)=x-2-10x+16). Therefore (k=10).
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For which (m) will \(x^2+mx+49\) be a perfect square trinomial?
B. (14)
\(49=7^2\) और पूर्ण वर्ग के लिए मध्य पद \(2\cdot7x=14x\) चाहिए। परीक्षा में अंतिम पद का वर्गमूल लें। / \(49=7^2\), and a perfect square needs middle term \(2\cdot7x=14x\). Exam tip: take the square root of the last term.
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What is the positive value of (m) to make \(x^2-mx+36\) a perfect square?
C. (12)
\(36=6^2\) है और ((x-6)2=x-2-12x+36) होता है। इसलिए (m=12) है। / \(36=6^2\) and ((x-6)2=x-2-12x+36). So (m=12).
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If \(4x^2+mx+25\) is a perfect square, what is the positive value of (m)?
B. (20)
(4x-2=(2x)2) और \(25=5^2\) हैं। मध्य पद \(2\cdot2x\cdot5=20x\) होगा। / (4x-2=(2x)2) and \(25=5^2\). The middle term will be \(2\cdot2x\cdot5=20x\).
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