题目内容
计算:
+
,正确的结果是( )
| x |
| x-1 |
| 1 |
| 1-x |
| A.-1 | B.0 | C.2 | D.1 |
| x |
| x-1 |
| 1 |
| 1-x |
=
| x |
| x-1 |
| -1 |
| x-1 |
=1,
故选D.
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相关题目
计算:
+
,正确的结果是( )
| x |
| x-1 |
| 1 |
| 1-x |
| A、-1 | B、0 | C、2 | D、1 |
题目内容
| x |
| x-1 |
| 1 |
| 1-x |
| A.-1 | B.0 | C.2 | D.1 |
| x |
| x-1 |
| 1 |
| 1-x |
| x |
| x-1 |
| -1 |
| x-1 |
| x |
| x-1 |
| 1 |
| 1-x |
| A、-1 | B、0 | C、2 | D、1 |