Answer
a.) $\sqrt[4] x$$\sqrt[4] {y^3}$
b.) $\sqrt 3$$\sqrt a$
Work Step by Step
In rational exponents, the numerator is the power of the base and the denominator is the number of the root when changed to a radical.
a.) x$^\frac{1}{4}$y$^\frac{3}{4}$=$\sqrt[4] x$$\sqrt[4] {y^3}$
b.) 3$^\frac{1}{2}$a$^\frac{1}{2}$=$\sqrt 3$$\sqrt a$
