Монгол Бодлогын Сан

$\biggl(\sqrt[4]x+\displaystyle\frac{\sqrt[4]{xy}-\sqrt y}{\sqrt[4]x-\sqrt[4]y}\biggr)\cdot\biggl(\displaystyle\frac{2\sqrt[4]{xy}}{\sqrt x-\sqrt y}+\displaystyle\frac{\sqrt[4]x}{\sqrt[4]x+\sqrt[4]y}-\displaystyle\frac{\sqrt[4]y}{\sqrt[4]x-\sqrt[4]y}\biggr)$ үйлдлийг гүйцэтгэ.