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[2 Mark Question Answer]

Question 532 Marks
Simplify:
$\left(x^{\frac{1}{3}}-x^{-\frac{1}{3}}\right)\left(x^{2 / 3}+1+x^{-2 / 3}\right)$
$\begin{aligned} {[\text { Hint. Given Exp. }} & =(a-b)\left(a^2+a b+b^2\right) \\ & \left.=\left(a^3-b^3\right)\right]\end{aligned}$
Answer
$\left(x-\frac{1}{x}\right)$
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Question 552 Marks
Simplify:
$\frac{5 \times(25)^{n+1}-25 \times 5^{2 n}}{5 \times 5^{(2 n+3)}-(25)^{n+1}}$
Answer
$\frac{1}{6}$
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[2 Mark Question Answer] - Page 2 - MATHEMATICS STD 9 Questions - Vidyadip