| ( | 24 5 | − | x | ) | ( | 24 5 | − | x | ) | + | 7 5 | × | 7 5 | = | x | x |
| Left side of the equation = | ( | 24 5 | − | x | ) | ( | 24 5 | − | x | ) | + | 49 25 |
| ( | 24 5 | − | x | ) | ( | 24 5 | − | x | ) | + | 49 25 | = | x | x |
| Left side of the equation = | 24 5 | ( | 24 5 | − | x | ) | − | x | ( | 24 5 | − | x | ) | + | 49 25 |
| = | 24 5 | × | 24 5 | − | 24 5 | x | − | x | ( | 24 5 | − | x | ) | + | 49 25 |
| = | 576 25 | − | 24 5 | x | − | x | ( | 24 5 | − | x | ) | + | 49 25 |
| = | 25 | − | 24 5 | x | − | x | ( | 24 5 | − | x | ) |
| = | 25 | − | 24 5 | x | − | x | × | 24 5 | + | x | x |
| = | 25 | − | 48 5 | x | + | x | x |
| 25 | − | 48 5 | x | + | x | x | = | x | x |