| ( | 1 | − | x | ) | ( | 1 | − | x | ) | = | 497 125 | × | 2 | x |
| Left side of the equation = | 1 | ( | 1 | − | x | ) | − | x | ( | 1 | − | x | ) |
| = | 1 | × | 1 | − | 1 | x | − | x | ( | 1 | − | x | ) |
| = | 1 | − | 1 | x | − | x | ( | 1 | − | x | ) |
| = | 1 | − | 1 | x | − | x | × | 1 | + | x | x |
| = | 1 | − | 2 | x | + | x | x |
| 1 | − | 2 | x | + | x | x | = | 497 125 | × | 2 | x |
| Right side of the equation = | 994 125 | x |
| 1 | − | 2 | x | + | x | x | = | 994 125 | x |