| t | ( | t | + | 1 | ) | ( | t | + | 2 | ) | ( | t | + | 3 | ) | + | 1 | = | 0 |
| 方程左边 = | t | t | ( | t | + | 2 | ) | ( | t | + | 3 | ) | + | t | × | 1 | ( | t | + | 2 | ) | ( | t | + | 3 | ) | + | 1 |
| = | t | t | t | ( | t | + | 3 | ) | + | t | t | × | 2 | ( | t | + | 3 | ) | + | t | × | 1 | ( | t | + | 2 | ) | ( | t | + | 3 | ) |
| = | t | t | t | t | + | t | t | t | × | 3 | + | t | t | × | 2 | ( | t | + | 3 | ) |
| = | t | t | t | t | + | t | t | t | × | 3 | + | t | t | × | 2 | t |
| = | t | t | t | t | + | t | t | t | × | 3 | + | t | t | × | 2 | t |
| = | t | t | t | t | + | t | t | t | × | 3 | + | t | t | × | 2 | t |
| = | t | t | t | t | + | t | t | t | × | 3 | + | t | t | × | 2 | t |
| = | t | t | t | t | + | t | t | t | × | 3 | + | t | t | × | 2 | t |
| = | t | t | t | t | + | t | t | t | × | 3 | + | t | t | × | 2 | t |
| = | t | t | t | t | + | t | t | t | × | 3 | + | t | t | × | 2 | t |
| = | t | t | t | t | + | t | t | t | × | 3 | + | t | t | × | 2 | t |
| t | t | t | t | + | t | t | t | × | 3 | + | t | t | × | 2 | t | = | 0 |
| t1= | - | 1309017 500000 |
| t2= | - | 1309017 500000 |
| t3= | - | 190983 500000 |
| t4= | - | 190983 500000 |