| 3 | ( | x | − | 607 1000 | ) | ( | x | − | 819 1000 | ) | + | 2 | ( | x | − | 1 | ) | ( | x | − | 819 1000 | ) | − | 5 | ( | x | − | 1 | ) | ( | x | − | 607 1000 | ) | = | 0 |
| 方程左边 = | 3 | x | ( | x | − | 819 1000 | ) | − | 3 | × | 607 1000 | ( | x | − | 819 1000 | ) | + | 2 | ( | x | − | 1 | ) | ( | x | − | 819 1000 | ) | − | 5 | ( | x | − | 1 | ) | ( | x | − | 607 1000 | ) |
| = | 3 | x | ( | x | − | 819 1000 | ) | − | 1821 1000 | ( | x | − | 819 1000 | ) | + | 2 | ( | x | − | 1 | ) | ( | x | − | 819 1000 | ) | − | 5 | ( | x | − | 1 | ) | ( | x | − | 607 1000 | ) |
| = | 3 | x | x | − | 3 | x | × | 819 1000 | − | 1821 1000 | ( | x | − | 819 1000 | ) | + | 2 | ( | x | − | 1 | ) | ( | x | − | 819 1000 | ) | − | 5 |
| = | 3 | x | x | − | 2457 1000 | x | − | 1821 1000 | ( | x | − | 819 1000 | ) | + | 2 | ( | x | − | 1 | ) | ( | x | − | 819 1000 | ) | − | 5 | ( | x | − | 1 | ) |
| = | 3 | x | x | − | 2457 1000 | x | − | 1821 1000 | x | + | 1821 1000 | × | 819 1000 | + | 2 | ( | x | − | 1 | ) | ( | x | − | 819 1000 | ) |
| = | 3 | x | x | − | 2457 1000 | x | − | 1821 1000 | x | + | 1491399 1000000 | + | 2 | ( | x | − | 1 | ) | ( | x | − | 819 1000 | ) | − | 5 |
| = | 3 | x | x | − | 2139 500 | x | + | 1491399 1000000 | + | 2 | ( | x | − | 1 | ) | ( | x | − | 819 1000 | ) | − | 5 | ( | x | − | 1 | ) | ( | x | − | 607 1000 | ) |
| = | 3 | x | x | − | 2139 500 | x | + | 1491399 1000000 | + | 2 | x | ( | x | − | 819 1000 | ) | − | 2 | × | 1 | ( | x | − | 819 1000 | ) |
| = | 3 | x | x | − | 2139 500 | x | + | 1491399 1000000 | + | 2 | x | ( | x | − | 819 1000 | ) | − | 2 | ( | x | − | 819 1000 | ) | − | 5 |
| = | 3 | x | x | − | 2139 500 | x | + | 1491399 1000000 | + | 2 | x | x | − | 2 | x | × | 819 1000 |
| = | 3 | x | x | − | 2139 500 | x | + | 1491399 1000000 | + | 2 | x | x | − | 819 500 | x | − | 2 |
| = | 3 | x | x | − | 1479 250 | x | + | 1491399 1000000 | + | 2 | x | x | − | 2 | ( | x | − | 819 1000 | ) | − | 5 |
| = | 3 | x | x | − | 1479 250 | x | + | 1491399 1000000 | + | 2 | x | x | − | 2 | x | + | 2 |
| = | 3 | x | x | − | 1479 250 | x | + | 1491399 1000000 | + | 2 | x | x | − | 2 | x | + | 819 500 |
| = | 3 | x | x | − | 1979 250 | x | + | 3129399 1000000 | + | 2 | x | x | − | 5 | ( | x | − | 1 | ) | ( | x | − | 607 1000 | ) |
| = | 3 | x | x | − | 1979 250 | x | + | 3129399 1000000 | + | 2 | x | x | − | 5 | x | ( | x | − | 607 1000 | ) |
| = | 3 | x | x | − | 1979 250 | x | + | 3129399 1000000 | + | 2 | x | x | − | 5 | x | ( | x | − | 607 1000 | ) |
| = | 3 | x | x | − | 1979 250 | x | + | 3129399 1000000 | + | 2 | x | x | − | 5 | x | x |
| = | 3 | x | x | − | 1979 250 | x | + | 3129399 1000000 | + | 2 | x | x | − | 5 | x | x |
| = | 3 | x | x | − | 4881 1000 | x | + | 3129399 1000000 | + | 2 | x | x | − | 5 | x | x |
| = | 3 | x | x | − | 4881 1000 | x | + | 3129399 1000000 | + | 2 | x | x | − | 5 | x | x |
| = | 3 | x | x | − | 4881 1000 | x | + | 3129399 1000000 | + | 2 | x | x | − | 5 | x | x |
| = | 3 | x | x | + | 119 1000 | x | + | 94399 1000000 | + | 2 | x | x | − | 5 | x | x |
| 3 | x | x | + | 119 1000 | x | + | 94399 1000000 | + | 2 | x | x | − | 5 | x | x | = | 0 |