题目内容
已知x=1+
,那么
+
-
=______.
| 3 |
| 1 |
| x+2 |
| 1 |
| x2-4 |
| 1 |
| x-2 |
| 1 |
| x+2 |
| 1 |
| x2-4 |
| 1 |
| x-2 |
| -4 |
| x2-4 |
| 1 |
| x2-4 |
| -3 |
| x2-4 |
| -3 | ||
(1+
|
| ||
| 2 |
故答案为-
| ||
| 2 |
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题目内容
| 3 |
| 1 |
| x+2 |
| 1 |
| x2-4 |
| 1 |
| x-2 |
| 1 |
| x+2 |
| 1 |
| x2-4 |
| 1 |
| x-2 |
| -4 |
| x2-4 |
| 1 |
| x2-4 |
| -3 |
| x2-4 |
| -3 | ||
(1+
|
| ||
| 2 |
| ||
| 2 |