Question

Which expression is equivalent to

Answer 1

The answer is the last option

Answer 2

$\sqrt[4]{ \cfrac{24x^6y}{128x^4y^5} } = \sqrt[4]{ \cfrac{3x^2}{16y^4} } = \cfrac{ \sqrt[4]{3x^2} }{\sqrt[4]{16y^4} } =\cfrac{ \sqrt[4]{3x^2} }{2y}$