9 | ( | x | − | 1 | ) | ( | x | − | 1 | ) | − | 4 | ( | 2 | − | 3 | x | ) | ( | 2 | − | 3 | x | ) | = | 0 |
Left side of the equation = | 9 | x | ( | x | − | 1 | ) | − | 9 | × | 1 | ( | x | − | 1 | ) | − | 4 | ( | 2 | − | 3 | x | ) | ( | 2 | − | 3 | x | ) |
= | 9 | x | ( | x | − | 1 | ) | − | 9 | ( | x | − | 1 | ) | − | 4 | ( | 2 | − | 3 | x | ) | ( | 2 | − | 3 | x | ) |
= | 9 | x | x | − | 9 | x | × | 1 | − | 9 | ( | x | − | 1 | ) | − | 4 | ( | 2 | − | 3 | x | ) | ( | 2 | − | 3 | x | ) |
= | 9 | x | x | − | 9 | x | − | 9 | ( | x | − | 1 | ) | − | 4 | ( | 2 | − | 3 | x | ) | ( | 2 | − | 3 | x | ) |
= | 9 | x | x | − | 9 | x | − | 9 | x | + | 9 | × | 1 | − | 4 | ( | 2 | − | 3 | x | ) | ( | 2 | − | 3 | x | ) |
= | 9 | x | x | − | 9 | x | − | 9 | x | + | 9 | − | 4 | ( | 2 | − | 3 | x | ) | ( | 2 | − | 3 | x | ) |
= | 9 | x | x | − | 18 | x | + | 9 | − | 4 | ( | 2 | − | 3 | x | ) | ( | 2 | − | 3 | x | ) |
= | 9 | x | x | − | 18 | x | + | 9 | − | 4 | × | 2 | ( | 2 | − | 3 | x | ) | + | 4 | × | 3 | x |
= | 9 | x | x | − | 18 | x | + | 9 | − | 8 | ( | 2 | − | 3 | x | ) | + | 12 | x | ( | 2 | − | 3 | x | ) |
= | 9 | x | x | − | 18 | x | + | 9 | − | 8 | × | 2 | + | 8 | × | 3 | x | + | 12 |
= | 9 | x | x | − | 18 | x | + | 9 | − | 16 | + | 24 | x | + | 12 | x | ( | 2 | − | 3 | x | ) |
= | 9 | x | x | + | 6 | x | − | 7 | + | 12 | x | ( | 2 | − | 3 | x | ) |
= | 9 | x | x | + | 6 | x | − | 7 | + | 12 | x | × | 2 | − | 12 | x | × | 3 |
= | 9 | x | x | + | 6 | x | − | 7 | + | 24 | x | − | 36 | x | x |
= | 9 | x | x | + | 30 | x | − | 7 | − | 36 | x | x |
9 | x | x | + | 30 | x | − | 7 | − | 36 | x | x | = | 0 |
x1= | 1 3 |
x2= | 7 9 |