题目内容
化简：(1+
)÷
| 1 |
| x |
| x2-1 |
| x |
（1+
）÷
=
÷
=
=
=
．
故答案为
．
| 1 |
| x |
| x2-1 |
| x |
=
| x+1 |
| x |
| x2-1 |
| x |
=
| x+1 |
| x2-1 |
=
| x+1 |
| (x+1)(x-1) |
=
| 1 |
| x-1 |
故答案为
| 1 |
| x-1 |
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