问题
解答题
先化简，再求值：(1+
|
答案
原式=(
| m-2 |
| m-2 |
| 1 |
| m-2 |
| (m+1)(m-1) |
| 2(m-2) |
=
| m-1 |
| m-2 |
| 2(m-2) |
| (m+1)(m-1) |
=
| 2 |
| m+1 |
当m=-5时，原式=
| 2 |
| m+1 |
| 2 |
| -5+1 |
| 1 |
| 2 |
搜题请搜索小程序“爱下问搜题”
先化简，再求值：(1+
|
原式=(
| m-2 |
| m-2 |
| 1 |
| m-2 |
| (m+1)(m-1) |
| 2(m-2) |
=
| m-1 |
| m-2 |
| 2(m-2) |
| (m+1)(m-1) |
=
| 2 |
| m+1 |
当m=-5时，原式=
| 2 |
| m+1 |
| 2 |
| -5+1 |
| 1 |
| 2 |