| ( | 16 | − | 2 | t | ) | ( | 16 | − | 2 | t | ) | = | t | t | + | 144 |
| 方程左边 = | 16 | ( | 16 | − | 2 | t | ) | − | 2 | t | ( | 16 | − | 2 | t | ) |
| = | 16 | × | 16 | − | 16 | × | 2 | t | − | 2 | t | ( | 16 | − | 2 | t | ) |
| = | 256 | − | 32 | t | − | 2 | t | ( | 16 | − | 2 | t | ) |
| = | 256 | − | 32 | t | − | 2 | t | × | 16 | + | 2 | t | × | 2 | t |
| = | 256 | − | 32 | t | − | 32 | t | + | 4 | t | t |
| = | 256 | − | 64 | t | + | 4 | t | t |
| 256 | − | 64 | t | + | 4 | t | t | = | t | t | + | 144 |