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 471-480 of 604 questions.
What is obtained after simplifying (2p(p-3)+4(p+1))?
A. \(2p^2-2p+4\)
(2p(p-3)=2p-2-6p) और (4(p+1)=4p+4)। मिलाने पर \(2p^2-2p+4\) मिलेगा। / (2p(p-3)=2p-2-6p) and (4(p+1)=4p+4). Combining gives \(2p^2-2p+4\).
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If (x+y=5), what is the value of (2(x+y)-3)?
A. (7)
पूरे (x+y) को (5) से बदलें। तब (2(5)-3=7) होगा। / Replace the whole (x+y) by (5). Then (2(5)-3=7).
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After simplifying \(9r^2s-4rs+rs-5r^2s\), what will be the coefficient of \(r^2s\)?
B. (4)
\(r^2s\) वाले पद \(9r^2s\) और \(-5r^2s\) हैं। उनका योग \(4r^2s\) है। / The \(r^2s\) terms are \(9r^2s\) and \(-5r^2s\). Their sum is \(4r^2s\).
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Which expression represents adding (x+y) to four times (3x-2y)?
A. (4(3x-2y)+x+y)
पहले (3x-2y) का (4) गुना लेना है और फिर (x+y) जोड़ना है। इसलिए (4(3x-2y)+x+y) सही है। / First take four times (3x-2y), then add (x+y). Therefore (4(3x-2y)+x+y) is correct.
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What is the sum of \(x^2+2x-3\) and \(2x^2-x+4\)?
A. \(3x^2+x+1\)
समान पद जोड़ने पर \(x^2+2x^2=3x^2\), (2x-x=x) और (-3+4=1)। / Adding like terms gives \(x^2+2x^2=3x^2\), (2x-x=x), and (-3+4=1).
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What is obtained by subtracting \(2x^2+4x-1\) from \(5x^2-3x+8\)?
B. \(3x^2-7x+9\)
घटाने पर (5x-2-3x+8-\(2x^2+4x-1\)) मिलेगा। सरल रूप \(3x^2-7x+9\) है। / Subtraction gives (5x-2-3x+8-\(2x^2+4x-1\)). The simplified form is \(3x^2-7x+9\).
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If (a-b=4) and (b=3), what is the value of (2a-b)?
B. (11)
(a-b=4) और (b=3) से (a=7)। इसलिए (2a-b=14-3=11)। / From (a-b=4) and (b=3), (a=7). Therefore (2a-b=14-3=11).
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After simplifying (3xy-2x+4xy+7x-5y), which term will not remain?
D. (9x)
सरल रूप (7xy+5x-5y) है। इसमें (9x) जैसा कोई पद नहीं है। / The simplified form is (7xy+5x-5y). There is no term like (9x).
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Which option gives the correct simplified form of (2x(x-4)+3x)?
A. \(2x^2-5x\)
(2x(x-4)=2x-2-8x) है। इसमें (3x) जोड़ने पर \(2x^2-5x\) मिलता है। / (2x(x-4)=2x-2-8x). Adding (3x) gives \(2x^2-5x\).
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If the value of \(x^2+kx+6\) at (x=2) is (16), what is (k)?
B. (3)
\(2^2+2k+6=16\) से (10+2k=16)। इसलिए (k=3) है। / From \(2^2+2k+6=16\), (10+2k=16). Hence (k=3).
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