| 1 | ÷ | ( | x | + | 1 | ) | − | 1 | ÷ | x | − | 1 | ÷ | ( | x | + | 1 2 | ) | = | 0 |
| 方程两边同时乘以: | ( | x | + | 1 | ) |
| 1 | − | 1 | ÷ | x | × | ( | x | + | 1 | ) | − | 1 | ÷ | ( | x | + | 1 2 | ) | × | ( | x | + | 1 | ) | = | 0 |
| 1 | − | 1 | ÷ | x | × | x | − | 1 | ÷ | x | × | 1 | − | 1 | ÷ | ( | x | + | 1 2 | ) | × | ( | x | + | 1 | ) | = | 0 |
| 1 | − | 1 | ÷ | x | × | x | − | 1 | ÷ | x | − | 1 | ÷ | ( | x | + | 1 2 | ) | × | ( | x | + | 1 | ) | = | 0 |
| 方程两边同时乘以: | x |
| 1 | x | − | 1 | ÷ | 1 | × | 1 | x | − | 1 | − | 1 | ÷ | ( | x | + | 1 2 | ) | × | ( | x | + | 1 | ) | x | = | 0 |
| 1 | x | − | 1 | ÷ | 1 | × | 1 | x | − | 1 | − | 1 | ÷ | ( | x | + | 1 2 | ) | × | x | x | − | 1 | = | 0 |
| 1 | x | − | 1 | x | − | 1 | − | 1 | ÷ | ( | x | + | 1 2 | ) | × | x | x | − | 1 | ÷ | ( | x | + | 1 2 | ) | × | x | = | 0 |
| 0 | x | − | 1 | − | 1 | ÷ | ( | x | + | 1 2 | ) | × | x | x | − | 1 | ÷ | ( | x | + | 1 2 | ) | × | x | = | 0 |
| 方程两边同时乘以: | ( | x | + | 1 2 | ) |
| - | 1 | ( | x | + | 1 2 | ) | − | 1 | x | x | − | 1 | x | = | 0 |
| - | 1 | x | − | 1 | × | 1 2 | − | 1 | x | x | − | 1 | x | = | 0 |
| - | 1 | x | − | 1 2 | − | 1 | x | x | − | 1 | x | = | 0 |
| - | 2 | x | − | 1 2 | − | 1 | x | x | = | 0 |