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 291-300 of 604 questions.
What is obtained after simplifying \(10z^2+z-4z^2-6z+3\)?
A. \(6z^2-5z+3\)
\(10z^2-4z^2=6z^2\) और (z-6z=-5z)। स्थिर पद (3) अलग रहता है। / \(10z^2-4z^2=6z^2\) and (z-6z=-5z). The constant term (3) remains separate.
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If (c=-2), what is the value of \(2c^3+c^2\)?
A. (-12)
(2(-2)3+(-2)2=2(-8)+4=-12)। विषम घात में ऋण चिन्ह बचता है। / (2(-2)3+(-2)2=2(-8)+4=-12). A negative sign remains in an odd power.
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Why are \(a^2b\) and \(ab^2\) not like terms?
C. क्योंकि (a) और (b) की घातें अलग व्यवस्था में हैंBecause powers of (a) and (b) are arranged differently
समान पदों में प्रत्येक चर की घात समान होनी चाहिए। यहाँ (a) और (b) की घातें अलग हैं। / Like terms must have the same power of each variable. Here the powers of (a) and (b) are different.
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Which expression is obtained after simplifying (2x-3(4-x))?
A. (5x-12)
(-3(4-x)=-12+3x), इसलिए (2x-12+3x=5x-12)। ऋणात्मक गुणन में चिन्ह ध्यान से बदलें। / (-3(4-x)=-12+3x), so (2x-12+3x=5x-12). Change signs carefully in negative multiplication.
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In which expression is the coefficient of (rs) equal to (8)?
B. (8rs-5r)
(8rs-5r) में (rs) के साथ (8) गुणा हो रहा है। इसलिए (rs) का गुणांक (8) है। / In (8rs-5r), (rs) is multiplied by (8). Therefore, the coefficient of (rs) is (8).
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What is obtained after simplifying \(2x^2+3xy-4x^2+5xy\)?
A. \(-2x^2+8xy\)
\(2x^2-4x^2=-2x^2\) और (3xy+5xy=8xy)। समान चर भाग वाले पदों को मिलाएँ। / \(2x^2-4x^2=-2x^2\) and (3xy+5xy=8xy). Combine terms with the same variable part.
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If (x=1) and (y=5), what is the value of \(2x+y^2\)?
B. (27)
(2(1)+52=2+25=27)। पहले घात और गुणा का मान निकालें। / (2(1)+52=2+25=27). Evaluate powers and multiplication first.
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Which option is equal to (6(x+1)-x)?
C. (5x+6)
(6(x+1)-x=6x+6-x=5x+6)। समान पद मिलाकर बराबर रूप पहचानें। / (6(x+1)-x=6x+6-x=5x+6). Combine like terms to identify the equivalent form.
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What is obtained after simplifying \(x^2+x+x^2+x+1\)?
A. \(2x^2+2x+1\)
दो \(x^2\) पद \(2x^2\) बनाते हैं और दो (x) पद (2x) बनाते हैं। स्थिर पद (1) अलग रहता है। / The two \(x^2\) terms make \(2x^2\), and the two (x) terms make (2x). The constant (1) remains separate.
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In which expression is the power of (x) equal to (1) and the power of (y) equal to (2)?
B. \(xy^2\)
\(xy^2\) में (x) की अदृश्य घात (1) और (y) की घात (2) है। अदृश्य घात को (1) मानें। / In \(xy^2\), the invisible power of (x) is (1) and the power of (y) is (2). Treat an invisible power as (1).
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