(2a-b+c)^2-(3a+2b-c)^2分解因式

分类: 作业答案 • 2023-01-19 00:26:51

问题描述：

答

(2a-b+c)^2-(3a+2b-c)^2
=[(2a-b+c)+(3a+2b-c)][(2a-b+c)-(3a+2b-c)]
=[2a-b+c+3a+2b-c][2a-b+c-3a-2b+c]
=(5a+b)(-a-3b+2c)