a-1分之A平方—2a+1-(a-2)

来源:学生作业帮助网 编辑:六六作业网 时间:2024/04/29 17:17:43
a-1分之A平方—2a+1-(a-2)a-1分之A平方—2a+1-(a-2)a-1分之A平方—2a+1-(a-2)(a^2-2a+1)/(a-1)-(a-2)=(a-1)^2/(a-1)-(a-2)=

a-1分之A平方—2a+1-(a-2)
a-1分之A平方—2a+1-(a-2)

a-1分之A平方—2a+1-(a-2)
(a^2-2a+1)/(a-1)-(a-2)
=(a-1)^2/(a-1)-(a-2)
=a-1-(a-2)
=a-1-a+2
=2-1
=1