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 61-70 of 550 questions.
What do we get by putting (x=4) in \(x^2-8x+16=0\)?
A. (0=0)
\(4^2-8\cdot4+16=0\) मिलता है। इसलिए (x=4) समीकरण को संतुष्ट करता है। / We get \(4^2-8\cdot4+16=0\). So (x=4) satisfies the equation.
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For \(12x^2=0\), what are (a), (b), (c) respectively?
A. (12,0,0)
इसे \(12x^2+0x+0=0\) लिखा जाता है। इसलिए (a=12), (b=0), (c=0) हैं। / It is written as \(12x^2+0x+0=0\). Therefore (a=12), (b=0), (c=0).
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Write (2x(x+7)=0) in standard form.
A. \(2x^2+14x=0\)
(2x) को कोष्ठक के दोनों पदों से गुणा करें। इससे \(2x^2+14x=0\) मिलता है। / Multiply (2x) by both terms inside the bracket. This gives \(2x^2+14x=0\).
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What is the expanded form of ((x+4)(x+5)=0)?
A. \(x^2+9x+20=0\)
विस्तार करने पर \(x^2+5x+4x+20=0\) मिलता है। समान पद जोड़कर \(x^2+9x+20=0\) बनता है। / Expanding gives \(x^2+5x+4x+20=0\). Combining like terms gives \(x^2+9x+20=0\).
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Which is the standard form of ((x-6)(x+2)=0)?
A. \(x^2-4x-12=0\)
विस्तार से \(x^2+2x-6x-12=0\) मिलता है। इसलिए \(x^2-4x-12=0\) सही है। / Expansion gives \(x^2+2x-6x-12=0\). So \(x^2-4x-12=0\) is correct.
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What is the coefficient of \(x^2\) in \(x^2+12x+36=0\)?
B. (1)
जब \(x^2\) के आगे कोई संख्या नहीं लिखी होती तब गुणांक (1) होता है। यह अक्सर पूछी जाने वाली बात है। / When no number is written before \(x^2\), its coefficient is (1). This is often asked.
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What is the value of (a) in \(-2x^2+5x-1=0\)?
B. (-2)
\(x^2\) का गुणांक (-2) है। इसलिए मानक रूप में (a=-2) है। / The coefficient of \(x^2\) is (-2). So in standard form (a=-2).
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Which option shows \(x^2+10x+25=0\) in factor form?
A. ((x+5)2=0)
\(x^2+10x+25\) पूर्ण वर्ग है। यह ((x+5)2) के बराबर है। / \(x^2+10x+25\) is a perfect square. It equals ((x+5)2).
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Which value is a solution of \(x^2-3x-10=0\)?
C. (5)
\(5^2-3\cdot5-10=0\) है। इसलिए (x=5) हल है। / Since \(5^2-3\cdot5-10=0\), (x=5) is a solution.
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If the highest power of the variable in an equation is (2), what is it called?
B. द्विघात समीकरणQuadratic equation
सबसे बड़ी घात (2) होने पर समीकरण द्विघात कहलाता है। घात पहचानना पहला कदम है। / When the highest power is (2), the equation is called quadratic. Identifying degree is the first step.
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