## Precalculus (6th Edition)

$\color{blue}{5\sqrt[4]{2}}$
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: $=\color{blue}{5\sqrt[4]{2}}$