石狮黄金海岸别墅房价:分解因式(y-x)(a-b+c) +(x-y)(b+a+c)
来源:百度文库 编辑:高校问答 时间:2024/04/29 23:12:44
分解因式(有步骤):
(y-x)(a-b+c)+(x-y)(b+a+c)
(y-x)(a-b+c)+(x-y)(b+a+c)
(y-x)(a-b+c)+(x-y)(b+a+c)
=(y-x)(a-b+c)-(y-x)(b+a+c)
=(y-x)(a-b+c-a-b-c)
=-2b(y-x)
=(y-x)(a-b+c)-(y-x)(b+a+c)
=(y-x)(a-b+c-b-a-c)
=(y-x)(-2b)
=-2by+2bx