xx-yy-(x+y)(x+y),因式分解

分类: 作业答案 • 2022-01-09 18:03:33

问题描述：

x*x-y*y-(x+y)(x+y),因式分解

答

原式＝(x+y)(x-y)-(x+y)^2
=(x+y)(x-y-(x+y))
=-2y(x+y)

x*x-y*y-(x+y)(x+y),因式分解