题目：
（1）计算：| 27 |
| 1 |
| 2 |
| 3 |
（2）化简：
| x-3 |
| x-2 |
| 5 |
| x-2 |
答案
解：（1）原式=3| 3 |
| 3 |
| 3 |
=
| 3 |
（2）原式=
| x-3 |
| x-2 |
| x2-9 |
| x-2 |
=
| x-3 |
| x-2 |
| x-2 |
| (x+3)(x-3) |
=
| 1 |
| x+3 |
解：（1）原式=3
| 3 |
| 3 |
| 3 |
=
| 3 |
（2）原式=
| x-3 |
| x-2 |
| x2-9 |
| x-2 |
=
| x-3 |
| x-2 |
| x-2 |
| (x+3)(x-3) |
=
| 1 |
| x+3 |
| 27 |
| 1 |
| 2 |
| 3 |
| x-3 |
| x-2 |
| 5 |
| x-2 |
| 3 |
| 3 |
| 3 |
| 3 |
| x-3 |
| x-2 |
| x2-9 |
| x-2 |
| x-3 |
| x-2 |
| x-2 |
| (x+3)(x-3) |
| 1 |
| x+3 |
| 3 |
| 3 |
| 3 |
| 3 |
| x-3 |
| x-2 |
| x2-9 |
| x-2 |
| x-3 |
| x-2 |
| x-2 |
| (x+3)(x-3) |
| 1 |
| x+3 |
