running man 泥潭摔跤:分解因式

来源:百度文库 编辑:杭州交通信息网 时间:2024/05/05 17:44:03
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)