| ( | 1 | − | x | ) | ( | 1 | − | x | ) | − | ( | 631 10000 | − | x | ) | ( | 30641 5000 | − | x | ) | = | 0 |
| 方程左边 = | 1 | ( | 1 | − | x | ) | − | x | ( | 1 | − | x | ) | − | ( | 631 10000 | − | x | ) | ( | 30641 5000 | − | x | ) |
| = | 1 | × | 1 | − | 1 | x | − | x | ( | 1 | − | x | ) | − | ( | 631 10000 | − | x | ) | ( | 30641 5000 | − | x | ) |
| = | 1 | − | 1 | x | − | x | ( | 1 | − | x | ) | − | ( | 631 10000 | − | x | ) | ( | 30641 5000 | − | x | ) |
| = | 1 | − | 1 | x | − | x | × | 1 | + | x | x | − | ( | 631 10000 | − | x | ) | ( | 30641 5000 | − | x | ) |
| = | 1 | − | 2 | x | + | x | x | − | ( | 631 10000 | − | x | ) | ( | 30641 5000 | − | x | ) |
| = | 1 | − | 2 | x | + | x | x | − | 631 10000 | ( | 30641 5000 | − | x | ) | + | x | ( | 30641 5000 | − | x | ) |
| = | 1 | − | 2 | x | + | x | x | − | 631 10000 | × | 30641 5000 | + | 631 10000 | x | + | x | ( | 30641 5000 | − | x | ) |
| = | 1 | − | 2 | x | + | x | x | − | 19334471 50000000 | + | 631 10000 | x | + | x | ( | 30641 5000 | − | x | ) |
| = | 30665529 50000000 | − | 19369 10000 | x | + | x | x | + | x | ( | 30641 5000 | − | x | ) |
| = | 30665529 50000000 | − | 19369 10000 | x | + | x | x | + | x | × | 30641 5000 | − | x | x |
| = | 30665529 50000000 | + | 41913 10000 | x | + | x | x | − | x | x |
30665529 50000000 | + | 41913 10000 | x | + | x | x | − | x | x | = | 0 |