因式分解4(x-y)^2-8(x-y^3
问题描述:
因式分解4(x-y)^2-8(x-y^3
答
4(x-y)^2-8(x-y)^3
=4(x-y)^2[1-2(x-y)]
=4(x-y)^2(1-2x+2y)