Class 9th math Review Exercise 1 solution english PCTB

Question 7: Simplify the following:

\((ii)\) \(\quad\) \(\large{\sqrt[3]{( 27)^{2x}}} \)

Solution:

\[
\begin{align*}
&=\sqrt[3]{( 27)^{2x}}\\
&=( 27)^{\large{\frac{2x}{3}}}\\
&=\left( 3^{3}\right)^{\large{\frac{2x}{3}}}\\
&=3^{3\times \large{\frac{2x}{3}}}\\
&=3^{2x}
\end{align*}
\]

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