|a+1|/根号（a方+1）=1
问题描述：
|a+1|/根号（a方+1）=1
如题
答
|a+1|/根号（a方+1）=1
|a+1|=根号（a方+1）
(a+1)^2=a^2+1
2a+1=1
a=0