| ( | x | + | 1 | ) | ( | x | + | 0 | ) | ( | x | − | 1 | ) | ( | x | − | 2 | ) | = | 1000 |
| Left side of the equation = | x | ( | x | + | 0 | ) | ( | x | − | 1 | ) | ( | x | − | 2 | ) | + | 1 | ( | x | + | 0 | ) | ( | x | − | 1 | ) | ( | x | − | 2 | ) |
| = | x | x | ( | x | − | 1 | ) | ( | x | − | 2 | ) | + | x | × | 0 | ( | x | − | 1 | ) | ( | x | − | 2 | ) | + | 1 | ( | x | + | 0 | ) | ( | x | − | 1 | ) | ( | x | − | 2 | ) |
| = | x | x | x | ( | x | − | 2 | ) | − | x | x | × | 1 | ( | x | − | 2 | ) | + | x | × | 0 | ( | x | − | 1 | ) | ( | x | − | 2 | ) |
| = | x | x | x | x | − | x | x | x | × | 2 | − | x | x | × | 1 | ( | x | − | 2 | ) |
| = | x | x | x | x | − | x | x | x | × | 2 | − | x | x | × | 1 | x |
| = | x | x | x | x | − | x | x | x | × | 2 | − | x | x | × | 1 | x |
| = | x | x | x | x | − | x | x | x | × | 2 | − | x | x | × | 1 | x |
| = | x | x | x | x | − | x | x | x | × | 2 | − | x | x | × | 1 | x |
| = | x | x | x | x | − | x | x | x | × | 2 | − | x | x | × | 1 | x |
| = | x | x | x | x | − | x | x | x | × | 2 | − | x | x | × | 1 | x |
| = | x | x | x | x | − | x | x | x | × | 2 | − | x | x | × | 1 | x |
| = | x | x | x | x | − | x | x | x | × | 2 | − | x | x | × | 1 | x |
| = | x | x | x | x | − | x | x | x | × | 2 | − | x | x | × | 1 | x |
| = | x | x | x | x | − | x | x | x | × | 2 | − | x | x | × | 1 | x |
| = | x | x | x | x | − | x | x | x | × | 2 | − | x | x | × | 1 | x |
| = | x | x | x | x | − | x | x | x | × | 2 | − | x | x | × | 1 | x |
| = | x | x | x | x | − | x | x | x | × | 2 | − | x | x | × | 1 | x |
| = | x | x | x | x | − | x | x | x | × | 2 | − | x | x | × | 1 | x |
| = | x | x | x | x | − | x | x | x | × | 2 | − | x | x | × | 1 | x |
| = | x | x | x | x | − | x | x | x | × | 2 | − | x | x | × | 1 | x |
| = | x | x | x | x | − | x | x | x | × | 2 | − | x | x | × | 1 | x |
| = | x | x | x | x | − | x | x | x | × | 2 | − | x | x | × | 1 | x |
| = | x | x | x | x | − | x | x | x | × | 2 | − | x | x | × | 1 | x |
| = | x | x | x | x | − | x | x | x | × | 2 | − | x | x | × | 1 | x |
| = | x | x | x | x | − | x | x | x | × | 2 | − | x | x | × | 1 | x |