Question

Помогите! Разложите на множители.
x^2y-xy^2+3+x-y+3xy

Answer 1

x^2y-xy^2+3+x-y+3xy=xy(x-y)+(x-y)+3(1+xy)=(x-y)(xy+1)+3(1+xy)=(xy+1)(x-y+3)