69 5 | × | 1685 | x | ( | 2823 2 | − | x | ÷ | 2 | ) | − | 1828230000 | = | 0 |
| 方程左边 = | 23253 | x | ( | 2823 2 | − | x | ÷ | 2 | ) | − | 1828230000 |
| 23253 | x | ( | 2823 2 | − | x | ÷ | 2 | ) | − | 1828230000 | = | 0 |
| 方程左边 = | 23253 | x | × | 2823 2 | − | 23253 | x | x | ÷ | 2 | − | 1828230000 |
| = | 65643219 2 | x | − | 23253 2 | x | x | − | 1828230000 |
65643219 2 | x | − | 23253 2 | x | x | − | 1828230000 | = | 0 |