| ( | 62 | − | x | ) | ( | 62 | − | x | ) | x | x | = | 6400 | ( | x | x | − | 35 | × | 35 | ) |
| 方程左边 = | 62 | ( | 62 | − | x | ) | x | x | − | x | ( | 62 | − | x | ) | x | x |
| = | 62 | × | 62 | x | x | − | 62 | x | x | x | − | x | ( | 62 | − | x | ) | x | x |
| = | 3844 | x | x | − | 62 | x | x | x | − | x | ( | 62 | − | x | ) | x | x |
| = | 3844 | x | x | − | 62 | x | x | x | − | x | × | 62 | x | x | + | x |
| 3844 | x | x | − | 62 | x | x | x | − | x | × | 62 | x | x | + | x | = | 6400 | ( | x | x | − | 35 | × | 35 | ) |
| 方程右边 = | 6400 | x | x | − | 6400 | × | 35 | × | 35 |
| = | 6400 | x | x | − | 7840000 |
| 3844 | x | x | − | 62 | x | x | x | − | x | × | 62 | x | x | + | x | = | 6400 | x | x | − | 7840000 |