| ( | x | − | 2 | ) | ( | x | + | 53 | ) | − | 64 25 | = | 0 |
| Left side of the equation = | x | ( | x | + | 53 | ) | − | 2 | ( | x | + | 53 | ) | − | 64 25 |
| = | x | x | + | x | × | 53 | − | 2 | ( | x | + | 53 | ) | − | 64 25 |
| = | x | x | + | 53 | x | − | 2 | x | − | 2 | × | 53 | − | 64 25 |
| = | x | x | + | 53 | x | − | 2 | x | − | 106 | − | 64 25 |
| = | x | x | + | 51 | x | − | 2714 25 |
| x | x | + | 51 | x | − | 2714 25 | = | 0 |