长城炼油厂宿舍房价:分解因式

来源:百度文库 编辑:高校问答 时间:2024/04/29 21:19:29
x^2-xy+ax-y+a-1

写出过程,谢谢

x^2-xy+ax-y+a-1
=(x^2-1)-(xy+y)+(ax+a)
=(x-1)(x+1)-y(x+1)+a(x+1)
=(x-1-y+a)(x+1)

x^2-xy+ax-y+a-1
=(x^2-1)-(xy+y)+(ax+a)
=(x-1)(x+1)-y(x+1)+a(x+1)
=(x-1-y+a)(x+1)