分解因式x^2y+x^2y+2xy^2-4xy^3是x^3y+x^2y+2xy^2-4xy^3
问题描述:
分解因式x^2y+x^2y+2xy^2-4xy^3
是x^3y+x^2y+2xy^2-4xy^3
答
是不是x^3y+x^2y+2xy^2-4xy^3
原式=xy(x^2-4y^2)+x^2y+2xy^2
=xy(x+2y)(x-2y)+xy(x+2y)
=xy(x+2y)(x-2y+1)