4x^3-4x^2y+2x^2-2xy因式分解怎么做
问题描述:
4x^3-4x^2y+2x^2-2xy因式分解怎么做
答
4x^3-4x^2y+2x^2-2xy
=4x^3+2x^2-4x^2y-2xy
=2x^2(2x+1)-2xy(2x+1)
=2x(2x+1)(x-y)