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 451-460 of 604 questions.
What is the simplified form of (7x-3[2x-{x-6}])?
A. (4x-18)
अंदर (2x-(x-6)=x+6), इसलिए (7x-3(x+6)=4x-18)। अंदरूनी कोष्ठक पहले हटाएं। / Inside (2x-(x-6)=x+6), so (7x-3(x+6)=4x-18). Remove inner brackets first.
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Which option gives the correct result of subtracting \(2x^2-7x-6\) from \(5x^2-3x+8\)?
A. \(3x^2+4x+14\)
(\(5x^2-3x+8\)-\(2x^2-7x-6\)=3x-2+4x+14)। घटाते समय दूसरे व्यंजक के सभी चिह्न बदलें। / (\(5x^2-3x+8\)-\(2x^2-7x-6\)=3x-2+4x+14). Change all signs of the second expression while subtracting.
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If (x=2), what is the value of (x(x+5)-3(x-1))?
A. (11)
मान रखने पर (2(7)-3(1)=11) मिलता है। पहले कोष्ठक का मान निकालें। / Substitution gives (2(7)-3(1)=11). Evaluate the brackets first.
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What is the simplified form of (2(5x-3)-4[2x-{x-2}])?
B. (6x-14)
अंदर (2x-(x-2)=x+2), इसलिए (10x-6-4(x+2)=6x-14)। कोष्ठकों को अंदर से बाहर हल करें। / Inside (2x-(x-2)=x+2), so (10x-6-4(x+2)=6x-14). Solve brackets from inside to outside.
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If (2x-2-3x+5-\(x^2+4x-7\)) is simplified, what is the result?
A. \(x^2-7x+12\)
कोष्ठक हटाते समय अंदर के चिन्ह बदलेंगे। इसलिए \(2x^2-3x+5-x^2-4x+7=x^2-7x+12\)। / Signs change when the bracket is subtracted. Thus \(2x^2-3x+5-x^2-4x+7=x^2-7x+12\).
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If (x=-2), what is the value of \(3x^3-2x^2+5x-1\)?
A. (-43)
((-2)3) ऋणात्मक और ((-2)2) धनात्मक होगा। मान (3(-8)-2(4)+5(-2)-1=-43) है। / ((-2)3) is negative and ((-2)2) is positive. The value is (3(-8)-2(4)+5(-2)-1=-43).
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What is obtained after simplifying \(4a^2b-3ab^2+5a^2b+7ab^2\)?
A. \(9a^2b+4ab^2\)
\(a^2b\) वाले पद और \(ab^2\) वाले पद अलग-अलग मिलेंगे। इसलिए उत्तर \(9a^2b+4ab^2\) है। / Terms with \(a^2b\) and \(ab^2\) combine separately. Therefore the answer is \(9a^2b+4ab^2\).
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Which expression has the simplified form (5p-18)?
A. (3(2p-5)-(p+3))
(3(2p-5)-(p+3)=6p-15-p-3=5p-18)। विकल्प जाँचने के लिए पहले कोष्ठक खोलें। / (3(2p-5)-(p+3)=6p-15-p-3=5p-18). Open brackets first to check options.
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If (m=3) and (n=-2), what is the value of \(m^2n-2mn^2\)?
A. (-42)
(m-2n=9(-2)=-18) और (2mn-2=2(3)(4)=24)। इसलिए कुल मान (-18-24=-42) है। / (m-2n=9(-2)=-18) and (2mn-2=2(3)(4)=24). So the total value is (-18-24=-42).
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What is obtained after simplifying (2(x+3y)-3(2x-y)+4x)?
B. (9y)
खोलने पर (2x+6y-6x+3y+4x) मिलता है। (x) पद कट जाते हैं और (9y) बचता है। / Expanding gives (2x+6y-6x+3y+4x). The (x)-terms cancel and (9y) remains.
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