Answer
$y\sqrt[3]y^{2}$
Work Step by Step
$\sqrt[3] y^{5}=\sqrt[3](y^{3}\times y^{2})=\sqrt[3]y^{3}\times\sqrt[3]y^{2}=y\sqrt[3]y^{2}$
We know that $\sqrt[3] y^{3}=y$, because $(y)^{3}=y^{3}$.
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