Answer
$\color{blue}{-\frac{1}{2}\sqrt[3]{5}}$
Work Step by Step
Factor the radicand so that one factor is a perfect cube to obtain:
$=-\sqrt[3]{\left(\frac{1}{8}\right)(5)}
\\=-\sqrt{\left(\frac{1}{2}\right)^3(5)}$
Bring out the cube root of the perfect cube factor to obtain:
$\\=\color{blue}{-\frac{1}{2}\sqrt[3]{5}}$