| 1 |
| x-2 |
| x2-2x+1 |
| x2-4 |
(2)解分式方程:
| 3 |
| x+1 |
| 1 |
| x-1 |
| 6 |
| x2-1 |
答案:
(1)原式=| x-1 |
| x-2 |
| (x+2)(x-2) |
| (x-1)2 |
| x+2 |
| x-1 |
当x=-5时,原式=
| -5+2 |
| -5-1 |
| 1 |
| 2 |
去括号得:3x-3+x+1=6,
解得:x=2,
经检验x=2是分式方程的解.

| 1 |
| x-2 |
| x2-2x+1 |
| x2-4 |
| 3 |
| x+1 |
| 1 |
| x-1 |
| 6 |
| x2-1 |
答案:
(1)原式=| x-1 |
| x-2 |
| (x+2)(x-2) |
| (x-1)2 |
| x+2 |
| x-1 |
| -5+2 |
| -5-1 |
| 1 |
| 2 |