| ( | x | − | 1 | ) | ( | x | − | 1 | ) | ( | x | − | 4 | ) | + | 32 | − | 16 | ( | x | − | 4 | ) | − | 8 | ( | x | − | 1 | ) | = | 0 |
| 方程左边 = | x | ( | x | − | 1 | ) | ( | x | − | 4 | ) | − | 1 | ( | x | − | 1 | ) | ( | x | − | 4 | ) | + | 32 | − | 16 | ( | x | − | 4 | ) | − | 8 | ( | x | − | 1 | ) |
| = | x | x | ( | x | − | 4 | ) | − | x | × | 1 | ( | x | − | 4 | ) | − | 1 | ( | x | − | 1 | ) | ( | x | − | 4 | ) | + | 32 | − | 16 | ( | x | − | 4 | ) |
| = | x | x | x | − | x | x | × | 4 | − | x | × | 1 | ( | x | − | 4 | ) | − | 1 | ( | x | − | 1 | ) | ( | x | − | 4 | ) |
| = | x | x | x | − | x | x | × | 4 | − | x | × | 1 | x | + | x | × | 1 | × | 4 |
| = | x | x | x | − | x | x | × | 4 | − | x | × | 1 | x | + | x | × | 4 | − | 1 |
| = | x | x | x | − | x | x | × | 4 | − | x | × | 1 | x | + | 4 | x | − | 1 |
| = | x | x | x | − | x | x | × | 4 | − | x | × | 1 | x | + | 4 | x | − | 1 |
| = | x | x | x | − | x | x | × | 4 | − | x | × | 1 | x | + | 4 | x | − | 1 |
| = | x | x | x | − | x | x | × | 4 | − | x | × | 1 | x | + | 4 | x | − | 1 |
| = | x | x | x | − | x | x | × | 4 | − | x | × | 1 | x | + | 8 | x | − | 1 |
| = | x | x | x | − | x | x | × | 4 | − | x | × | 1 | x | + | 8 | x | − | 1 |
| = | x | x | x | − | x | x | × | 4 | − | x | × | 1 | x | + | 8 | x | − | 1 |
| = | x | x | x | − | x | x | × | 4 | − | x | × | 1 | x | + | 9 | x | − | 1 |
| = | x | x | x | − | x | x | × | 4 | − | x | × | 1 | x | + | 9 | x | − | 1 |
| = | x | x | x | − | x | x | × | 4 | − | x | × | 1 | x | + | 9 | x | − | 1 |
| = | x | x | x | − | x | x | × | 4 | − | x | × | 1 | x | − | 7 | x | − | 1 |
| = | x | x | x | − | x | x | × | 4 | − | x | × | 1 | x | − | 7 | x | − | 1 |
| = | x | x | x | − | x | x | × | 4 | − | x | × | 1 | x | − | 7 | x | − | 1 |
| = | x | x | x | − | x | x | × | 4 | − | x | × | 1 | x | − | 15 | x | − | 1 |
| x | x | x | − | x | x | × | 4 | − | x | × | 1 | x | − | 15 | x | − | 1 | = | 0 |