Question

помогите
пожалуйста!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answer 1

$\frac{1}{3}x^{2}-\frac{2}{3}xy+\frac{1}{3}y^{2}=\frac{1}{3}(x^{2}-2xy+y^{2})=\frac{1}{3}(x-y)^{2}=\frac{1}{3}(x-y)(x-y)$