| ( | x | − | 1 | ÷ | 2 | ) | ( | x | − | 33 | ÷ | 2 | ) | = | 0 |
| 方程左边 = | x | ( | x | − | 33 | ÷ | 2 | ) | − | 1 | ÷ | 2 | × | ( | x | − | 33 | ÷ | 2 | ) |
| = | x | ( | x | − | 33 | ÷ | 2 | ) | − | 1 2 | ( | x | − | 33 | ÷ | 2 | ) |
| = | x | x | − | x | × | 33 | ÷ | 2 | − | 1 2 | ( | x | − | 33 | ÷ | 2 | ) |
| = | x | x | − | x | × | 33 2 | − | 1 2 | ( | x | − | 33 | ÷ | 2 | ) |
| = | x | x | − | 33 2 | x | − | 1 2 | x | + | 1 2 | × | 33 | ÷ | 2 |
| = | x | x | − | 33 2 | x | − | 1 2 | x | + | 33 4 |
| = | x | x | − | 17 | x | + | 33 4 |
| x | x | − | 17 | x | + | 33 4 | = | 0 |
| x1= | 1 2 |
| x2= | 33 2 |