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