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 501-510 of 604 questions.
What is obtained after simplifying (4x(x+2)-2\(3x^2-x\))?
A. \(-2x^2+10x\)
(4x(x+2)=4x-2+8x) और (-2\(3x^2-x\)=-6x-2+2x)। कुल \(-2x^2+10x\) है। / (4x(x+2)=4x-2+8x) and (-2\(3x^2-x\)=-6x-2+2x). The total is \(-2x^2+10x\).
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Which term should be removed from \(2x^2+3x+5\) so that the expression has no constant term?
C. (5)
स्थिर पद वह है जिसमें कोई चर नहीं होता। (5) हटाने पर केवल चर वाले पद बचते हैं। / The constant term has no variable. Removing (5) leaves only variable terms.
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If (x=2), (y=3), which statement is correct about \(x^2y+xy^2\) and (xy(x+y))?
C. दोनों बराबर हैंBoth are equal
(x-2y+xy-2=xy(x+y)) समान रूप हैं। दिए मान रखने पर दोनों (30) देते हैं। / (x-2y+xy-2=xy(x+y)) are equivalent forms. Substitution gives (30) for both.
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What is obtained after simplifying \(7x^2-2xy+3y^2-4x^2+6xy-8y^2\)?
A. \(3x^2+4xy-5y^2\)
\(7x^2-4x^2=3x^2\), (-2xy+6xy=4xy), और \(3y^2-8y^2=-5y^2\)। / \(7x^2-4x^2=3x^2\), (-2xy+6xy=4xy), and \(3y^2-8y^2=-5y^2\).
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What is obtained after simplifying (3x-2-2x+7-\(x^2+5x-4\))?
B. \(2x^2-7x+11\)
कोष्ठक हटाते समय अंदर के चिन्ह बदलते हैं। सरल रूप \(3x^2-2x+7-x^2-5x+4=2x^2-7x+11\) है। / Signs inside change when the bracket is subtracted. The simplified form is \(3x^2-2x+7-x^2-5x+4=2x^2-7x+11\).
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If (x=-1), what is the value of \(2x^4-3x^3+x-5\)?
D. (-1)
सम घात में मान धनात्मक और विषम घात में ऋणात्मक रहता है। मान (2(1)-3(-1)-1-5=-1) है। / Even powers give positive values and odd powers keep the negative sign. The value is (2(1)-3(-1)-1-5=-1).
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What is obtained after simplifying \(6a^2b+2ab^2-4a^2b+9ab^2\)?
C. \(2a^2b+11ab^2\)
\(a^2b\) वाले पद और \(ab^2\) वाले पद अलग-अलग मिलते हैं। इसलिए परिणाम \(2a^2b+11ab^2\) है। / Terms with \(a^2b\) and \(ab^2\) combine separately. Therefore, the result is \(2a^2b+11ab^2\).
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If the simplified form of ((k-2)x+5x) is (9x), what is the value of (k)?
B. (6)
समान पद मिलाने पर ((k-2+5)x=(k+3)x) मिलता है। (k+3=9) से (k=6) होगा। / Combining like terms gives ((k-2+5)x=(k+3)x). From (k+3=9), (k=6).
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If (x-y=8) and (x+y=14), what is the value of (x)?
C. (11)
दोनों दिए हुए व्यंजकों को जोड़ने पर (2x=22) मिलता है। इसलिए (x=11) है। / Adding the two given expressions gives (2x=22). Therefore, (x=11).
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What is obtained after simplifying (4(3p-2q)-2(5p+q)+7q)?
A. (2p-3q)
खोलने पर (12p-8q-10p-2q+7q) मिलता है। समान पद मिलाकर (2p-3q) बनेगा। / Expanding gives (12p-8q-10p-2q+7q). Combining like terms gives (2p-3q).
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