Answer
$-3$
Work Step by Step
RECALL:
(i) $a^{\frac{1}{5}}=\sqrt[5]{a}$
(ii) $\sqrt[5]{a^5}=a$
Use rule (i) above to obtain:
$=-\sqrt[5]{243}$
Write 243 as $3^5$:
$=-\sqrt[5]{3^5}$
Use rule (ii) above to obtain:
$=-3$