Answer
$x^2$; Domain includes all real numbers except -2.
Work Step by Step
Pull out the GCF in the numerator and then divide.
The domain includes all real numbers because nothing can be plugged into the simplified expression to make it undefined.
$\frac{x^3+2x^2}{x+2}$
$\frac{x^2(x+2)}{x+2}$
$x^2$
