3x(x-2y)^2-6x^2(2y-x)
问题描述:
3x(x-2y)^2-6x^2(2y-x)
大哥哥大姐姐帮帮忙啊···急用!
答
3x(x-2y)^2-6x^2(2y-x)
=3x(x-2y)^2+6x^2(x-2y)
=(x-2y)(3x^2-6xy+6x^2)
=3x(x-2y)(3x-2y)