## Precalculus (6th Edition) Blitzer

The expanded from for the expression ${{\left( x+2y \right)}^{5}}$ is ${{x}^{5}}+10{{x}^{4}}y+40{{x}^{3}}{{y}^{2}}+80{{x}^{2}}{{y}^{3}}+80x{{y}^{4}}+32{{y}^{5}}$.