CPM Homework Help : PC3 Problem 10-130

Simplify: $\frac { x ^ { 8 / 3 } - x ^ { 2 / 3 } } { x ^ { 2 / 3 } + x ^ { - 1 / 3 } }$ (Hint: Factor out $x^{–1/3}$ first.)

Hint:

$x^{8/3}=x^{-1/3}\cdot x^{9/3}$