| ( | x | − | 2 | ( | x | − | 10 | ) | ) | ( | x | − | 1 | ) | − | x | + | 10 | = | 284 |
| Left side of the equation = | x | ( | x | − | 1 | ) | − | 2 | ( | x | − | 10 | ) | ( | x | − | 1 | ) | − | x | + | 10 |
| = | x | x | − | x | × | 1 | − | 2 | ( | x | − | 10 | ) | ( | x | − | 1 | ) | − | x | + | 10 |
| = | x | x | − | 2 | x | − | 2 | ( | x | − | 10 | ) | ( | x | − | 1 | ) | + | 10 |
| = | x | x | − | 2 | x | − | 2 | x | ( | x | − | 1 | ) | + | 2 | × | 10 | ( | x | − | 1 | ) | + | 10 |
| = | x | x | − | 2 | x | − | 2 | x | ( | x | − | 1 | ) | + | 20 | ( | x | − | 1 | ) | + | 10 |
| = | x | x | − | 2 | x | − | 2 | x | x | + | 2 | x | × | 1 | + | 20 | ( | x | − | 1 | ) |
| = | x | x | − | 2 | x | − | 2 | x | x | + | 2 | x | + | 20 | ( | x | − | 1 | ) | + | 10 |
| = | x | x | − | 0 | x | − | 2 | x | x | + | 20 | ( | x | − | 1 | ) | + | 10 |
| = | x | x | − | 0 | x | − | 2 | x | x | + | 20 | x | − | 20 | × | 1 | + | 10 |
| = | x | x | − | 0 | x | − | 2 | x | x | + | 20 | x | − | 20 | + | 10 |
| = | x | x | + | 20 | x | − | 2 | x | x | − | 10 |
| x | x | + | 20 | x | − | 2 | x | x | − | 10 | = | 284 |