| ( | 4 | x | − | 1 | ) | ( | 8 | x | − | 3 | ) | + | 1 | = | 0 |
| Left side of the equation = | 4 | x | ( | 8 | x | − | 3 | ) | − | 1 | ( | 8 | x | − | 3 | ) | + | 1 |
| = | 4 | x | × | 8 | x | − | 4 | x | × | 3 | − | 1 | ( | 8 | x | − | 3 | ) | + | 1 |
| = | 32 | x | x | − | 12 | x | − | 1 | ( | 8 | x | − | 3 | ) | + | 1 |
| = | 32 | x | x | − | 12 | x | − | 1 | × | 8 | x | + | 1 | × | 3 | + | 1 |
| = | 32 | x | x | − | 12 | x | − | 8 | x | + | 3 | + | 1 |
| = | 32 | x | x | − | 20 | x | + | 4 |
| 32 | x | x | − | 20 | x | + | 4 | = | 0 |