Simplify Each Expression $\sqrt[3]{64}$ (B) $\sqrt[4]{\frac{1}{2}}$ (C) $\sqrt{27 u^{4} v^{7}}$ (D) $\frac{\sqrt[5]{x^{2} y^{2}} \sqrt[5]{x}}{\sqrt[5]{y^{3}}}$

Essay

Simplify each expression. Assume that all variables represent positive real numbers.
(a) $\sqrt[3]{64}$
(b) $\sqrt[4]{\frac{1}{2}}$
(c) $\sqrt{27 u^{4} v^{7}}$
(d) $\frac{\sqrt[5]{x^{2} y^{2}} \sqrt[5]{x}}{\sqrt[5]{y^{3}}}$