3 | x | ( | x | − | 1 | ) | ( | x | − | 2 | ) | = | 2 | ( | x | + | 1 | ) | x | + | 6 | x | ( | x | − | 1 | ) |
方程左边 = | 3 | x | x | ( | x | − | 2 | ) | − | 3 | x | × | 1 | ( | x | − | 2 | ) |
= | 3 | x | x | ( | x | − | 2 | ) | − | 3 | x | ( | x | − | 2 | ) |
= | 3 | x | x | x | − | 3 | x | x | × | 2 | − | 3 | x | ( | x | − | 2 | ) |
= | 3 | x | x | x | − | 6 | x | x | − | 3 | x | ( | x | − | 2 | ) |
= | 3 | x | x | x | − | 6 | x | x | − | 3 | x | x | + | 3 | x |
= | 3 | x | x | x | − | 6 | x | x | − | 3 | x | x | + | 6 | x |
3 | x | x | x | − | 6 | x | x | − | 3 | x | x | + | 6 | x | = | 2 | ( | x | + | 1 | ) | x | + | 6 | x | ( | x | − | 1 | ) |
方程右边 = | 2 | x | x | + | 2 | × | 1 | x | + | 6 | x | ( | x | − | 1 | ) |
= | 2 | x | x | + | 2 | x | + | 6 | x | ( | x | − | 1 | ) |
= | 2 | x | x | + | 2 | x | + | 6 | x | x | − | 6 | x | × | 1 |
= | 2 | x | x | + | 2 | x | + | 6 | x | x | − | 6 | x |
= | 2 | x | x | − | 4 | x | + | 6 | x | x |
3 | x | x | x | − | 6 | x | x | − | 3 | x | x | + | 6 | x | = | 2 | x | x | − | 4 | x | + | 6 | x | x |
x2= | 2 3 |
x3=5 |