题目内容
化简:
+
=______.
| x+3 |
| x+2 |
| 2-x |
| x2-4 |
原式=
+
=
=1.
| (x+3)(x-2) |
| (x+2)(x-2) |
| 2-x |
| (x+2)(x-2) |
=
| x2-4 |
| (x+2)(x-2) |
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题目内容
| x+3 |
| x+2 |
| 2-x |
| x2-4 |
| (x+3)(x-2) |
| (x+2)(x-2) |
| 2-x |
| (x+2)(x-2) |
| x2-4 |
| (x+2)(x-2) |