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 551-560 of 604 questions.
If \(x^2+x=20\), what is the value of \(3x^2+3x-4\)?
A. (56)
(3x-2+3x-4=3\(x^2+x\)-4) है। दिए मान से (3(20)-4=56)। / (3x-2+3x-4=3\(x^2+x\)-4). Using the given value, (3(20)-4=56).
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After simplifying \(7x^2y-3xy+4x^2y+2xy-6\), which term will not remain?
D. (5xy)
सरल रूप \(11x^2y-xy-6\) है। इसमें (5xy) पद नहीं है। / The simplified form is \(11x^2y-xy-6\). It does not contain the term (5xy).
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If (x=2) and (y=1), 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 मानों पर दोनों का मान (6) है। / (x-2y+xy-2=xy(x+y)) are equivalent forms. For the given values, both equal (6).
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What is obtained after simplifying \(8x^2-6xy+y^2-3x^2+9xy-5y^2\)?
A. \(5x^2+3xy-4y^2\)
\(8x^2-3x^2=5x^2\), (-6xy+9xy=3xy), और \(y^2-5y^2=-4y^2\)। / \(8x^2-3x^2=5x^2\), (-6xy+9xy=3xy), and \(y^2-5y^2=-4y^2\).
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What is obtained after simplifying (4x-2-7x+6-\(2x^2-5x-3\))?
A. \(2x^2-2x+9\)
कोष्ठक घटाने पर अंदर के चिन्ह बदलते हैं। सरल रूप \(4x^2-7x+6-2x^2+5x+3=2x^2-2x+9\) है। / Signs change when the bracket is subtracted. The simplified form is \(4x^2-7x+6-2x^2+5x+3=2x^2-2x+9\).
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If (x=-2), what is the value of \(x^4+2x^3-3x^2+5\)?
B. (-7)
मान रखने पर (16+2(-8)-3(4)+5=-7) मिलता है। ऋणात्मक संख्या की सम और विषम घात अलग असर देती हैं। / Substitution gives (16+2(-8)-3(4)+5=-7). Even and odd powers of a negative number affect signs differently.
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What is obtained after simplifying \(9a^2b-4ab^2-6a^2b+11ab^2\)?
C. \(3a^2b+7ab^2\)
\(a^2b\) और \(ab^2\) वाले पद अलग-अलग मिलते हैं। इसलिए सरल रूप \(3a^2b+7ab^2\) है। / Terms with \(a^2b\) and \(ab^2\) combine separately. Therefore the simplified form is \(3a^2b+7ab^2\).
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If the simplified form of ((2k+1)x-4x) is (9x), what is the value of (k)?
C. (6)
समान पद मिलाने पर ((2k-3)x=9x) मिलता है। इसलिए (2k-3=9) और (k=6)। / Combining like terms gives ((2k-3)x=9x). Hence (2k-3=9) and (k=6).
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If (x+y=11) and (x-y=5), what is the value of (y)?
A. (3)
पहले व्यंजक में से दूसरा घटाने पर (2y=6) मिलता है। इसलिए (y=3) है। / Subtracting the second expression from the first gives (2y=6). Therefore (y=3).
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What is obtained after simplifying (5(2p-3q)-3(p+4q)+2q)?
B. (7p-25q)
खोलने पर (10p-15q-3p-12q+2q) मिलता है। समान पद मिलाकर (7p-25q) बनेगा। / Expanding gives (10p-15q-3p-12q+2q). Combining like terms gives (7p-25q).
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