## Precalculus (6th Edition) Blitzer

$2$
RECALL: (i) $\sqrt[n]{a^n}=a$ when $n$ is odd. (ii) $\sqrt[n]{a^n}=|a|$ when $n$ is even. Write the radicand as a cube to obtain $\sqrt[3]{2^3}.$ Simplify to obtain $2.$