| 8 |
| 3 |
| 2 |
| 3 |
| 2 |
| 3 |
| x-1 |
| x+1 |
| x2 |
| x-1 |
| 3 |
| x+1 |
| 2x |
| x2+1 |
例如:
| x-1 |
| x+1 |
| (x+1)-2 |
| x+1 |
| 2 |
| x+1 |
| x2 |
| x-1 |
| x2-1+1 |
| x-1 |
| (x+1)(x-1)+1 |
| x-1 |
| 1 |
| x-1 |
(1)将分式
| x-1 |
| x+2 |
(2)若分式
| 2x-1 |
| x+1 |
答案:
(1)| x-1 |
| x+2 |
=
| (x+2)-3 |
| x+2 |
=1-
| 3 |
| x+2 |
| 2x-1 |
| x+1 |
| 2(x+1)-3 |
| x+1 |
| 3 |
| x+1 |
当
| 2x-1 |
| x+1 |
| 3 |
| x+1 |
∴x+1可取得的整数值为±1,±3,
∴x的可能整数值为0,-2,2,-4.



