Answer
$\color{blue}{5\sqrt[4]{2}}$
Work Step by Step
Factor the radicand so that one factor is a perfect fourth power to obtain:
$=\sqrt[4]{625(2)}
\\=\sqrt[4]{5^4(2)}$
Bring out the fourth root of the perfect fourth power factor to obtain:
$=\color{blue}{5\sqrt[4]{2}}$
