Question

x²y - xy + x² - y²

 

Answer 1

\(=xy\left(x-y\right)+\left(x-y\right)\left(x+y\right)=\left(x-y\right)\left(xy+x+y\right)\)

Answer 2

\(x^2y-xy+x^2-y^2\)

\(=xy\left(x-y\right)+\left(x-y\right)\left(x+y\right)\)

\(=\left(x-y\right)\left(xy+x+y\right)\)