已知/a/=3，/b/=5，a与b异号.求/a-b/的值

Question

如题所述

Answer 1

|a|=3, |b|=5
a与b异号

case 1: a=3 , b=-5
|a-b| = |3+5|=8

case 2: a=-3 , b=5
|a-b| = |-3-5|=8

ie
|a-b| =8本回答被提问者和网友采纳