| ( | 8 | x | − | 16 | ) | ( | 8 | x | − | 16 | ) | − | 4 | ( | x | × | 2 | − | 4 | ) | ( | 16 | + | 16 | x | + | 3 | x | × | 2 | ) | = | 0 |
| 方程左边 = | 8 | x | ( | 8 | x | − | 16 | ) | − | 16 | ( | 8 | x | − | 16 | ) | − | 4 | ( | x | × | 2 | − | 4 | ) | ( | 16 | + | 16 | x | + | 3 | x | × | 2 | ) |
| = | 8 | x | × | 8 | x | − | 8 | x | × | 16 | − | 16 | ( | 8 | x | − | 16 | ) | − | 4 | ( | x | × | 2 | − | 4 | ) | ( | 16 | + | 16 | x | + | 3 | x | × | 2 | ) |
| = | 64 | x | x | − | 128 | x | − | 16 | ( | 8 | x | − | 16 | ) | − | 4 | ( | x | × | 2 | − | 4 | ) | ( | 16 | + | 16 | x | + | 3 | x | × | 2 | ) |
| = | 64 | x | x | − | 128 | x | − | 16 | × | 8 | x | + | 16 | × | 16 | − | 4 | ( | x | × | 2 | − | 4 | ) |
| = | 64 | x | x | − | 128 | x | − | 128 | x | + | 256 | − | 4 | ( | x | × | 2 | − | 4 | ) | ( | 16 | + | 16 | x | + | 3 | x | × | 2 | ) |
| = | 64 | x | x | − | 256 | x | + | 256 | − | 4 | ( | x | × | 2 | − | 4 | ) | ( | 16 | + | 16 | x | + | 3 | x | × | 2 | ) |
| = | 64 | x | x | − | 256 | x | + | 256 | − | 4 | x | × | 2 | ( | 16 | + | 16 | x | + | 3 | x | × | 2 | ) | + | 4 | × | 4 |
| = | 64 | x | x | − | 256 | x | + | 256 | − | 8 | x | ( | 16 | + | 16 | x | + | 3 | x | × | 2 | ) | + | 16 | ( | 16 | + | 16 | x | + | 3 | x | × | 2 | ) |
| = | 64 | x | x | − | 256 | x | + | 256 | − | 8 | x | × | 16 | − | 8 | x | × | 16 |
| = | 64 | x | x | − | 256 | x | + | 256 | − | 128 | x | − | 128 | x | x | − | 48 |
| = | 64 | x | x | − | 384 | x | + | 256 | − | 128 | x | x | − | 48 | x | x |
| = | 64 | x | x | − | 384 | x | + | 256 | − | 128 | x | x | − | 48 | x | x |
| = | 64 | x | x | − | 384 | x | + | 256 | − | 128 | x | x | − | 48 | x | x |
| = | 64 | x | x | − | 32 | x | + | 512 | − | 128 | x | x | − | 48 | x | x |
| 64 | x | x | − | 32 | x | + | 512 | − | 128 | x | x | − | 48 | x | x | = | 0 |
| x1= | - | 16 7 |
| x2=2 |