( | x | − | 1 | ) | ( | x | − | 2 | ) | ( | x | − | 3 | ) | = | 0 |
Left side of the equation = | x | ( | x | − | 2 | ) | ( | x | − | 3 | ) | − | 1 | ( | x | − | 2 | ) | ( | x | − | 3 | ) |
= | x | x | ( | x | − | 3 | ) | − | x | × | 2 | ( | x | − | 3 | ) | − | 1 | ( | x | − | 2 | ) | ( | x | − | 3 | ) |
= | x | x | x | − | x | x | × | 3 | − | x | × | 2 | ( | x | − | 3 | ) | − | 1 | ( | x | − | 2 | ) | ( | x | − | 3 | ) |
= | x | x | x | − | x | x | × | 3 | − | x | × | 2 | x | + | x | × | 2 | × | 3 |
= | x | x | x | − | x | x | × | 3 | − | x | × | 2 | x | + | x | × | 6 | − | 1 |
= | x | x | x | − | x | x | × | 3 | − | x | × | 2 | x | + | 6 | x | − | 1 |
= | x | x | x | − | x | x | × | 3 | − | x | × | 2 | x | + | 6 | x | − | 1 |
= | x | x | x | − | x | x | × | 3 | − | x | × | 2 | x | + | 6 | x | − | 1 |
= | x | x | x | − | x | x | × | 3 | − | x | × | 2 | x | + | 6 | x | − | 1 |
= | x | x | x | − | x | x | × | 3 | − | x | × | 2 | x | + | 9 | x | − | 1 |
= | x | x | x | − | x | x | × | 3 | − | x | × | 2 | x | + | 9 | x | − | 1 |
= | x | x | x | − | x | x | × | 3 | − | x | × | 2 | x | + | 9 | x | − | 1 |
= | x | x | x | − | x | x | × | 3 | − | x | × | 2 | x | + | 11 | x | − | 1 |
x | x | x | − | x | x | × | 3 | − | x | × | 2 | x | + | 11 | x | − | 1 | = | 0 |