| m |
| x |
| m |
| c |
| m |
| c |
验证:当x=c时,方程左边=c+
| m |
| c |
| m |
| c |
∴方程成立;
当x=
| m |
| c |
| m |
| c |
| m |
| c |
∴方程成立;
∴x+
| m |
| x |
| m |
| c |
| m |
| c |
(2)由x+
| 2 |
| x−1 |
| 2 |
| a−1 |
| 2 |
| x−1 |
| 2 |
| a−1 |
∴x-1=a-1,x−1=
| 2 |
| a−1 |
∴x1=a,x2=
| a+1 |
| a−1 |
| 1 |
| x |
| 1 |
| c |
| 1 |
| c |
| 1 |
| x |
| 1 |
| c |
| −1 |
| x |
| −1 |
| c |
| 1 |
| c |
| 2 |
| x |
| 2 |
| c |
| 2 |
| c |
| 3 |
| x |
| 3 |
| c |
| 3 |
| c |
| m |
| x |
| m |
| c |
| 2 |
| x−1 |
| 2 |
| a−1 |
| m |
| x |
| m |
| c |
| m |
| c |
| m |
| c |
| m |
| c |
| m |
| c |
| m |
| c |
| m |
| c |
| m |
| x |
| m |
| c |
| m |
| c |
| 2 |
| x−1 |
| 2 |
| a−1 |
| 2 |
| x−1 |
| 2 |
| a−1 |
| 2 |
| a−1 |
| a+1 |
| a−1 |