1 | ÷ | 6 | × | ( | x | + | 3 | ) | ( | x | − | 4 | ) | = | 0 |
方程左边 = | 1 6 | ( | x | + | 3 | ) | ( | x | − | 4 | ) |
1 6 | ( | x | + | 3 | ) | ( | x | − | 4 | ) | = | 0 |
方程左边 = | 1 6 | x | ( | x | − | 4 | ) | + | 1 6 | × | 3 | ( | x | − | 4 | ) |
= | 1 6 | x | ( | x | − | 4 | ) | + | 1 2 | ( | x | − | 4 | ) |
= | 1 6 | x | x | − | 1 6 | x | × | 4 | + | 1 2 | ( | x | − | 4 | ) |
= | 1 6 | x | x | − | 2 3 | x | + | 1 2 | ( | x | − | 4 | ) |
= | 1 6 | x | x | − | 2 3 | x | + | 1 2 | x | − | 1 2 | × | 4 |
= | 1 6 | x | x | − | 2 3 | x | + | 1 2 | x | − | 2 |
= | 1 6 | x | x | − | 1 6 | x | − | 2 |
1 6 | x | x | − | 1 6 | x | − | 2 | = | 0 |