| 2 | x | ( | x | + | 3 | ) | ( | x | + | 2 | ) | ( | x | + | 1 | ) | = | 0 |
| Left side of the equation = | 2 | x | x | ( | x | + | 2 | ) | ( | x | + | 1 | ) | + | 2 | x | × | 3 | ( | x | + | 2 | ) | ( | x | + | 1 | ) |
| = | 2 | x | x | ( | x | + | 2 | ) | ( | x | + | 1 | ) | + | 6 | x | ( | x | + | 2 | ) | ( | x | + | 1 | ) |
| = | 2 | x | x | x | ( | x | + | 1 | ) | + | 2 | x | x | × | 2 | ( | x | + | 1 | ) | + | 6 | x |
| = | 2 | x | x | x | ( | x | + | 1 | ) | + | 4 | x | x | ( | x | + | 1 | ) | + | 6 | x | ( | x | + | 2 | ) |
| = | 2 | x | x | x | x | + | 2 | x | x | x | × | 1 | + | 4 | x |
| = | 2 | x | x | x | x | + | 2 | x | x | x | + | 4 | x | x |
| = | 2 | x | x | x | x | + | 2 | x | x | x | + | 4 | x | x |
| = | 2 | x | x | x | x | + | 2 | x | x | x | + | 4 | x | x |
| = | 2 | x | x | x | x | + | 2 | x | x | x | + | 4 | x | x |
| = | 2 | x | x | x | x | + | 2 | x | x | x | + | 4 | x | x |
| = | 2 | x | x | x | x | + | 2 | x | x | x | + | 4 | x | x |
| = | 2 | x | x | x | x | + | 2 | x | x | x | + | 4 | x | x |
| = | 2 | x | x | x | x | + | 2 | x | x | x | + | 4 | x | x |
| = | 2 | x | x | x | x | + | 2 | x | x | x | + | 4 | x | x |
| 2 | x | x | x | x | + | 2 | x | x | x | + | 4 | x | x | = | 0 |