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 21-30 of 550 questions.
What is the value of (a) in \(-x^2+3x+10=0\)?
B. \(-1\)
\(-x^2\) का गुणांक (-1) होता है। इसलिए (a=-1) है। / The coefficient of \(-x^2\) is (-1). So (a=-1).
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Which option shows \(x^2+6x+9=0\) in factor form?
A. \((x+3)^2=0\)
\(x^2+6x+9\) एक पूर्ण वर्ग है। यह ((x+3)2) के बराबर है। / \(x^2+6x+9\) is a perfect square. It equals ((x+3)2).
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Which value is a solution of \(x^2+x-6=0\)?
B. (2)
\(2^2+2-6=0\) है। इसलिए (x=2) इस समीकरण का हल है। / Since \(2^2+2-6=0\), (x=2) is a solution of the equation.
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If an equation in (x) has degree (2), what is it called?
B. द्विघात समीकरणQuadratic equation
घात (2) वाले समीकरण को द्विघात समीकरण कहते हैं। नाम याद रखने के लिए द्वि का अर्थ (2) समझें। / An equation of degree (2) is called a quadratic equation. Remember that quadratic means degree (2).
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Which of the following contains the \(x^2\) term?
C. \(x^2-2=0\)
द्विघात समीकरण के लिए \(x^2\) पद आवश्यक है। विकल्प (C) में यह पद है। / The \(x^2\) term is necessary for a quadratic equation. Option (C) has this term.
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What is the linear term in \(2x^2+0x-7=0\)?
B. (0x)
रैखिक पद (x) वाला पद होता है। यहां वह (0x) है। / The linear term is the term containing (x). Here it is (0x).
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Which equation is equivalent to \(x^2+2x+1=0\)?
A. \((x+1)^2=0\)
((x+1)2=x-2+2x+1) होता है। पूर्ण वर्ग पहचानना तेजी से हल कराने में मदद करता है। / ((x+1)2=x-2+2x+1). Recognising perfect squares helps solve faster.
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How do we write \(x^2-16=0\) in factor form?
A. \((x-4)(x+4)=0\)
\(x^2-16\) वर्गों का अंतर है। इसलिए यह ((x-4)(x+4)) बनता है। / \(x^2-16\) is a difference of squares. Hence it becomes ((x-4)(x+4)).
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If (x=1), what is the left side of \(x^2+2x-3=0\)?
A. (0)
रखने पर \(1^2+2\cdot1-3=0\) मिलता है। इसलिए (1) एक हल है। / Substituting gives \(1^2+2\cdot1-3=0\). So (1) is a solution.
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What are (a), (b), (c) in \(7x^2-14=0\)?
A. (7,0,-14)
इसे \(7x^2+0x-14=0\) लिखें। इससे (a=7), (b=0), (c=-14) मिलते हैं। / Write it as \(7x^2+0x-14=0\). Then (a=7), (b=0), (c=-14).
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