| ( | X | − | 2 | ) | × | 3 | ( | X | − | 3 | ) | × | 4 | ( | X | − | 4 | ) | × | 3 | = | 0 |
| Left side of the equation = | ( | X | − | 2 | ) | × | 36 | ( | X | − | 3 | ) | ( | X | − | 4 | ) |
| ( | X | − | 2 | ) | × | 36 | ( | X | − | 3 | ) | ( | X | − | 4 | ) | = | 0 |
| Left side of the equation = | X | × | 36 | ( | X | − | 3 | ) | ( | X | − | 4 | ) | − | 2 | × | 36 | ( | X | − | 3 | ) | ( | X | − | 4 | ) |
| = | X | × | 36 | ( | X | − | 3 | ) | ( | X | − | 4 | ) | − | 72 | ( | X | − | 3 | ) | ( | X | − | 4 | ) |
| = | X | × | 36 | X | ( | X | − | 4 | ) | − | X | × | 36 | × | 3 | ( | X | − | 4 | ) | − | 72 | ( | X | − | 3 | ) | ( | X | − | 4 | ) |
| = | X | × | 36 | X | ( | X | − | 4 | ) | − | X | × | 108 | ( | X | − | 4 | ) | − | 72 | ( | X | − | 3 | ) | ( | X | − | 4 | ) |
| = | X | × | 36 | X | X | − | X | × | 36 | X | × | 4 | − | X | × | 108 | ( | X | − | 4 | ) | − | 72 |
| = | X | × | 36 | X | X | − | X | × | 144 | X | − | X | × | 108 | ( | X | − | 4 | ) | − | 72 | ( | X | − | 3 | ) |
| = | X | × | 36 | X | X | − | X | × | 144 | X | − | X | × | 108 | X | + | X | × | 108 |
| = | X | × | 36 | X | X | − | X | × | 144 | X | − | X | × | 108 | X | + | X | × | 432 |
| = | X | × | 36 | X | X | − | X | × | 144 | X | − | X | × | 108 | X | + | 432 | X |
| = | X | × | 36 | X | X | − | X | × | 144 | X | − | X | × | 108 | X | + | 432 | X |
| = | X | × | 36 | X | X | − | X | × | 144 | X | − | X | × | 108 | X | + | 432 | X |
| = | X | × | 36 | X | X | − | X | × | 144 | X | − | X | × | 108 | X | + | 432 | X |
| = | X | × | 36 | X | X | − | X | × | 144 | X | − | X | × | 108 | X | + | 720 | X |
| = | X | × | 36 | X | X | − | X | × | 144 | X | − | X | × | 108 | X | + | 720 | X |
| = | X | × | 36 | X | X | − | X | × | 144 | X | − | X | × | 108 | X | + | 720 | X |
| = | X | × | 36 | X | X | − | X | × | 144 | X | − | X | × | 108 | X | + | 936 | X |
| X | × | 36 | X | X | − | X | × | 144 | X | − | X | × | 108 | X | + | 936 | X | = | 0 |