| z | ( | 2 | z | + | 1 | ) | ( | z | − | 2 | ) | ( | 2 | z | − | 3 | ) | = | 63 |
| 方程左边 = | z | × | 2 | z | ( | z | − | 2 | ) | ( | 2 | z | − | 3 | ) | + | z | × | 1 | ( | z | − | 2 | ) | ( | 2 | z | − | 3 | ) |
| = | z | × | 2 | z | z | ( | 2 | z | − | 3 | ) | − | z | × | 2 | z | × | 2 | ( | 2 | z | − | 3 | ) | + | z | × | 1 |
| = | z | × | 2 | z | z | ( | 2 | z | − | 3 | ) | − | z | × | 4 | z | ( | 2 | z | − | 3 | ) | + | z | × | 1 | ( | z | − | 2 | ) |
| = | z | × | 2 | z | z | × | 2 | z | − | z | × | 2 | z | z | × | 3 | − | z |
| = | z | × | 4 | z | z | z | − | z | × | 6 | z | z | − | z | × | 4 | z |
| = | z | × | 4 | z | z | z | − | z | × | 6 | z | z | − | z | × | 4 | z |
| = | z | × | 4 | z | z | z | − | z | × | 6 | z | z | − | z | × | 8 | z |
| = | z | × | 4 | z | z | z | − | z | × | 6 | z | z | − | z | × | 8 | z |
| = | z | × | 4 | z | z | z | − | z | × | 6 | z | z | − | z | × | 8 | z |
| = | z | × | 4 | z | z | z | − | z | × | 6 | z | z | − | z | × | 8 | z |
| = | z | × | 4 | z | z | z | − | z | × | 6 | z | z | − | z | × | 8 | z |
| = | z | × | 4 | z | z | z | − | z | × | 6 | z | z | − | z | × | 8 | z |
| = | z | × | 4 | z | z | z | − | z | × | 6 | z | z | − | z | × | 8 | z |
| z | × | 4 | z | z | z | − | z | × | 6 | z | z | − | z | × | 8 | z | = | 63 |
| z1= | - | 3 2 |
| z2=3 |