题干
已知
=
+
，求实数A和B的值．
| 3 |
| x |
| - |
| 4 |
| ( |
| x |
| - |
| 1 |
| ) |
| ( |
| x |
| - |
| 2 |
| ) |
| A |
| x |
| - |
| 1 |
| B |
| x |
| - |
| 2 |
答案(点此获取答案解析）
解：∵
=
| 3 |
| x |
| - |
| 4 |
| ( |
| x |
| - |
| 1 |
| ) |
| ( |
| x |
| - |
| 2 |
| ) |
