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 341-350 of 604 questions.
If (m+n=8) and (m-n=2), what is the value of (3(m+n)-2(m-n))?
A. (20)
दिए गए मान रखने पर (3(8)-2(2)=20) मिलता है। पूरे कोष्ठक को एक मान की तरह लें। / Using the given values gives (3(8)-2(2)=20). Treat each bracket as one value.
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Which option gives the correct sum of \(2x^2-3x+1\) and \(x^2+5x-4\)?
C. \(3x^2+2x-3\)
समान पद जोड़ने पर \(3x^2+2x-3\) मिलता है। घात के अनुसार पदों को समूहित करें। / Combining like terms gives \(3x^2+2x-3\). Group the terms according to powers.
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What is the simplified form of (6x-[2x+{3-x}])?
A. (5x-3)
अंदर (2x+3-x=x+3) है, इसलिए (6x-(x+3)=5x-3)। अंदरूनी कोष्ठक पहले सरल करें। / Inside, (2x+3-x=x+3), so (6x-(x+3)=5x-3). Simplify the inner bracket first.
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If (a=2) and (b=-3), what is the value of \(a^2b-ab^2\)?
A. (-30)
मान रखने पर (4(-3)-2(9)=-12-18=-30) मिलता है। \(b^2\) धनात्मक होगा। / Substitution gives (4(-3)-2(9)=-12-18=-30). \(b^2\) will be positive.
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The sides of a triangle are (x+2), (2x-1), and (3x+4). What is the expression for its perimeter?
B. (6x+5)
परिमाप सभी भुजाओं का योग है। ((x+2)+(2x-1)+(3x+4)=6x+5)। / Perimeter is the sum of all sides. ((x+2)+(2x-1)+(3x+4)=6x+5).
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What is the simplified form of (-3(2y-5)+4(y+1))?
A. (-2y+19)
खोलने पर (-6y+15+4y+4=-2y+19) मिलता है। ऋणात्मक गुणक से कोष्ठक खोलते समय सावधानी रखें। / Expanding gives (-6y+15+4y+4=-2y+19). Be careful when expanding with a negative multiplier.
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Which option gives the correct simplified form of (7ab-3a+2ab+5a)?
A. (9ab+2a)
(7ab+2ab=9ab) और (-3a+5a=2a)। (ab) और (a) को समान पद नहीं मानें। / (7ab+2ab=9ab) and (-3a+5a=2a). Do not treat (ab) and (a) as like terms.
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If (x=4), what is the value of \(\frac{x^2-2x}{4}\)?
B. (2)
(x=4) रखने पर \(\frac{16-8}{4}=2\) मिलता है। अंश को पूरा सरल करके भाग दें। / Putting (x=4) gives \(\frac{16-8}{4}=2\). Simplify the whole numerator before dividing.
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What is the simplified form of (2x(3x+1)-x(4x-5))?
A. \(2x^2+7x\)
खोलने पर \(6x^2+2x-4x^2+5x=2x^2+7x\) मिलता है। हर कोष्ठक को अलग से खोलें। / Expanding gives \(6x^2+2x-4x^2+5x=2x^2+7x\). Expand each bracket separately.
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Which expression represents adding (5) to twice the difference of (x) and (2)?
B. (2(x-2)+5)
पहले अंतर (x-2) है, उसका दोगुना (2(x-2)) है। फिर (5) जोड़ने पर (2(x-2)+5) मिलता है। / First the difference is (x-2), and twice it is (2(x-2)). Adding (5) gives (2(x-2)+5).
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