( | 1 | − | x | ) | ( | 4 | − | x | ) | ( | 9 | − | x | ) | + | 32 | ( | x | + | 5 | ) | = | 0 |
方程左边 = | 1 | ( | 4 | − | x | ) | ( | 9 | − | x | ) | − | x | ( | 4 | − | x | ) | ( | 9 | − | x | ) | + | 32 | ( | x | + | 5 | ) |
= | 1 | × | 4 | ( | 9 | − | x | ) | − | 1 | x | ( | 9 | − | x | ) | − | x | ( | 4 | − | x | ) | ( | 9 | − | x | ) | + | 32 | ( | x | + | 5 | ) |
= | 4 | ( | 9 | − | x | ) | − | 1 | x | ( | 9 | − | x | ) | − | x | ( | 4 | − | x | ) | ( | 9 | − | x | ) | + | 32 | ( | x | + | 5 | ) |
= | 4 | × | 9 | − | 4 | x | − | 1 | x | ( | 9 | − | x | ) | − | x | ( | 4 | − | x | ) | ( | 9 | − | x | ) | + | 32 | ( | x | + | 5 | ) |
= | 36 | − | 4 | x | − | 1 | x | ( | 9 | − | x | ) | − | x | ( | 4 | − | x | ) | ( | 9 | − | x | ) | + | 32 | ( | x | + | 5 | ) |
= | 36 | − | 4 | x | − | 1 | x | × | 9 | + | 1 | x | x | − | x | ( | 4 | − | x | ) | ( | 9 | − | x | ) |
= | 36 | − | 4 | x | − | 9 | x | + | 1 | x | x | − | x | ( | 4 | − | x | ) | ( | 9 | − | x | ) | + | 32 |
= | 36 | − | 13 | x | + | 1 | x | x | − | x | ( | 4 | − | x | ) | ( | 9 | − | x | ) | + | 32 | ( | x | + | 5 | ) |
= | 36 | − | 13 | x | + | 1 | x | x | − | x | × | 4 | ( | 9 | − | x | ) | + | x | x | ( | 9 | − | x | ) |
= | 36 | − | 13 | x | + | 1 | x | x | − | x | × | 4 | × | 9 | + | x | × | 4 | x |
= | 36 | − | 13 | x | + | 1 | x | x | − | x | × | 36 | + | x | × | 4 | x | + | x |
= | 36 | − | 49 | x | + | 1 | x | x | + | x | × | 4 | x | + | x | x | ( | 9 | − | x | ) |
= | 36 | − | 49 | x | + | 1 | x | x | + | x | × | 4 | x | + | x | x | × | 9 |
= | 36 | − | 49 | x | + | 1 | x | x | + | x | × | 4 | x | + | x | x | × | 9 |
= | 36 | − | 49 | x | + | 1 | x | x | + | x | × | 4 | x | + | x | x | × | 9 |
= | 196 | − | 17 | x | + | 1 | x | x | + | x | × | 4 | x | + | x | x | × | 9 |
196 | − | 17 | x | + | 1 | x | x | + | x | × | 4 | x | + | x | x | × | 9 | = | 0 |