- | ( | 4 | − | x | ) | ( | 6 | + | x | ) | + | ( | 4 | − | x | ) | ( | ( | 5 | − | x | ) | ( | 3 | − | x | ) | − | 9 | ) | = | 0 |
方程左边 = | - | 4 | ( | 6 | + | x | ) | + | x | ( | 6 | + | x | ) | + | ( | 4 | − | x | ) | ( | ( | 5 | − | x | ) | ( | 3 | − | x | ) | − | 9 | ) |
= | - | 4 | × | 6 | − | 4 | x | + | x | ( | 6 | + | x | ) | + | ( | 4 | − | x | ) | ( | ( | 5 | − | x | ) | ( | 3 | − | x | ) | − | 9 | ) |
= | - | 24 | − | 4 | x | + | x | ( | 6 | + | x | ) | + | ( | 4 | − | x | ) | ( | ( | 5 | − | x | ) | ( | 3 | − | x | ) | − | 9 | ) |
= | - | 24 | − | 4 | x | + | x | × | 6 | + | x | x | + | ( | 4 | − | x | ) | ( | ( | 5 | − | x | ) | ( | 3 | − | x | ) | − | 9 | ) |
= | - | 24 | + | 2 | x | + | x | x | + | ( | 4 | − | x | ) | ( | ( | 5 | − | x | ) | ( | 3 | − | x | ) | − | 9 | ) |
= | - | 24 | + | 2 | x | + | x | x | + | 4 | ( | ( | 5 | − | x | ) | ( | 3 | − | x | ) | − | 9 | ) | − | x | ( | ( | 5 | − | x | ) | ( | 3 | − | x | ) | − | 9 | ) |
= | - | 24 | + | 2 | x | + | x | x | + | 4 | ( | 5 | − | x | ) | ( | 3 | − | x | ) | − | 4 | × | 9 | − | x | ( | ( | 5 | − | x | ) | ( | 3 | − | x | ) | − | 9 | ) |
= | - | 24 | + | 2 | x | + | x | x | + | 4 | ( | 5 | − | x | ) | ( | 3 | − | x | ) | − | 36 | − | x | ( | ( | 5 | − | x | ) | ( | 3 | − | x | ) | − | 9 | ) |
= | - | 60 | + | 2 | x | + | x | x | + | 4 | ( | 5 | − | x | ) | ( | 3 | − | x | ) | − | x | ( | ( | 5 | − | x | ) | ( | 3 | − | x | ) | − | 9 | ) |
= | - | 60 | + | 2 | x | + | x | x | + | 4 | × | 5 | ( | 3 | − | x | ) | − | 4 | x | ( | 3 | − | x | ) | − | x |
= | - | 60 | + | 2 | x | + | x | x | + | 20 | ( | 3 | − | x | ) | − | 4 | x | ( | 3 | − | x | ) | − | x | ( | ( | 5 | − | x | ) | ( | 3 | − | x | ) | − | 9 | ) |
= | - | 60 | + | 2 | x | + | x | x | + | 20 | × | 3 | − | 20 | x | − | 4 | x | ( | 3 | − | x | ) |
= | - | 60 | + | 2 | x | + | x | x | + | 60 | − | 20 | x | − | 4 | x | ( | 3 | − | x | ) | − | x |
= | - | 0 | − | 18 | x | + | x | x | − | 4 | x | ( | 3 | − | x | ) | − | x | ( | ( | 5 | − | x | ) | ( | 3 | − | x | ) | − | 9 | ) |
= | - | 18 | x | + | x | x | − | 4 | x | × | 3 | + | 4 | x | x | − | x | ( | ( | 5 | − | x | ) | ( | 3 | − | x | ) | − | 9 | ) |
= | - | 18 | x | + | x | x | − | 12 | x | + | 4 | x | x | − | x | ( | ( | 5 | − | x | ) | ( | 3 | − | x | ) | − | 9 | ) |
= | - | 30 | x | + | x | x | + | 4 | x | x | − | x | ( | ( | 5 | − | x | ) | ( | 3 | − | x | ) | − | 9 | ) |
= | - | 30 | x | + | x | x | + | 4 | x | x | − | x | ( | 5 | − | x | ) | ( | 3 | − | x | ) | + | x | × | 9 |
= | - | 21 | x | + | x | x | + | 4 | x | x | − | x | ( | 5 | − | x | ) | ( | 3 | − | x | ) |
= | - | 21 | x | + | x | x | + | 4 | x | x | − | x | × | 5 | ( | 3 | − | x | ) | + | x | x |
= | - | 21 | x | + | x | x | + | 4 | x | x | − | x | × | 5 | × | 3 | + | x | × | 5 |
= | - | 21 | x | + | x | x | + | 4 | x | x | − | x | × | 15 | + | x | × | 5 | x |
= | - | 36 | x | + | x | x | + | 4 | x | x | + | x | × | 5 | x | + | x | x |
= | - | 36 | x | + | x | x | + | 4 | x | x | + | x | × | 5 | x | + | x | x |
- | 36 | x | + | x | x | + | 4 | x | x | + | x | × | 5 | x | + | x | x | = | 0 |
- | 36 | x | + | x | x | + | 4 | x | x | + | x | × | 5 | x | + | x | x | = | 0 |