Homework Statement
\int{\frac{x^{3}}{\sqrt{4 - x^{2}}}}
NOTE: The use of "0" is theta. I couldn't figure out how to insert one :\
Homework Equations
The trig identity sin^{2}0 = 1 - cos^{2}0.
The Attempt at a Solution
I thought I completed the problem fine, but I realized WolframAlpha has a...