## Precalculus (6th Edition)

$\color{blue}{z^{5/4}}$
RECALL: $\sqrt[n]{a^m}=a^{m/n}$ Use the rule above with $a=z$, $m=5$, and $n=4$ to obtain: $\sqrt[4]{z^5} = \color{blue}{z^{5/4}}$