# Question #237bf

$\sqrt[3]{{y}^{2}} = {y}^{\frac{2}{3}}$.
Supposing that $y \in \mathbb{R}$, If you want the main root (real root) you can handle it as
$\sqrt[3]{{y}^{2}} = {\left\mid y \right\mid}^{\frac{2}{3}}$.