2a(x-y)^2+4a^2(y-x)^3

分类: 作业答案 • 2022-01-09 18:03:57

问题描述：

答

2a(x-y)^2+4a^2(y-x)^3
=2a(y-x)^2+4a^2(y-x)^3
=2a(x-y)^2(1+2a(y-x))
=2a(x-y)^2*(2ay-2ax+1)