Answer
$-\frac{2}{3}$
Work Step by Step
$\int^{1}_{0}(u^{2}-2u)du=\int^{1}_{0}u^{2}du-2\int^{1}_{0}udu $
$=[\frac{u^{3}}{3}]^{1}_{0}-2[\frac{u^{2}}{2}]^{1}_{0}$
$=(\frac{1^{3}}{3}-\frac{0^{3}}{3})-2(\frac{1^{2}}{2}-\frac{0^{2}}{2})=-\frac{2}{3}$