因式分解(x-y)^2-6(x^2-y^2)+9(x-y)^2

分类: 作业答案 • 2021-12-19 17:26:34

问题描述：

答

(x-y)^2-6(x^2-y^2)+9(x-y)^2=（x-y)(x-y-6x-6y+9x-9y)=(x-y)(2x-16y)=2(x-y)(x-8y)