Question
Simplify : $\left[\left(\frac{6}{7}\right)^5\right]^2$

Answer

\begin{aligned}
\left[\left(\frac{6}{7}\right)^5\right]^2 \\
=\left(\frac{6}{7}\right)^{5 \times 2}=\left(\frac{6}{7}\right)^{10}
\end{aligned}

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