| ( | 1 | − | x | ) | ( | 17 | − | 2 | x | ) | − | 1 | = | 0 |
| Left side of the equation = | 1 | ( | 17 | − | 2 | x | ) | − | x | ( | 17 | − | 2 | x | ) | − | 1 |
| = | 1 | × | 17 | − | 1 | × | 2 | x | − | x | ( | 17 | − | 2 | x | ) | − | 1 |
| = | 17 | − | 2 | x | − | x | ( | 17 | − | 2 | x | ) | − | 1 |
| = | 16 | − | 2 | x | − | x | ( | 17 | − | 2 | x | ) |
| = | 16 | − | 2 | x | − | x | × | 17 | + | x | × | 2 | x |
| = | 16 | − | 19 | x | + | x | × | 2 | x |
| 16 | − | 19 | x | + | x | × | 2 | x | = | 0 |