Question

P(x,y)= x5y+2x4y2+x3y3;

Answer 1

$=x^3y\left(x^2+2xy+y^2\right)$

$x^3y\left(x+y\right)\left(x+y\right)$

$\mathrm{Aplicar\:las\:leyes\:de\:los\:exponentes}:$

$\left(x+y\right)\left(x+y\right)=\left(x+y\right)^2$

$=x^3y\left(x+y\right)^2$