Answer
$y^3\sqrt[3]{y^2}$
Work Step by Step
Factor the radicand (expression inside the radical sign) so that at least one factor is a cube, and then simplify to obtain:
$=\sqrt[3]{y^9(y^2)}
\\=\sqrt[3]{(y^3)^3y^2}
\\=y^3\sqrt[3]{y^2}$
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