Answer
$\frac{p^{8}}{q^{2}}$
Work Step by Step
$(\frac{p^{4}}{q})^{2}$ = $\frac{(p^{4})^{2}}{q^{2}}$ = $\frac{p^{4*2}}{q^{2}}$ = $\frac{p^{8}}{q^{2}}$
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