( | 2 | − | x | ) | ( | 5 | − | x | ) | ( | 5 | − | x | ) | − | 40 | + | 24 | x | = | 0 |
方程左边 = | 2 | ( | 5 | − | x | ) | ( | 5 | − | x | ) | − | x | ( | 5 | − | x | ) | ( | 5 | − | x | ) | − | 40 | + | 24 | x |
= | 2 | × | 5 | ( | 5 | − | x | ) | − | 2 | x | ( | 5 | − | x | ) | − | x | ( | 5 | − | x | ) | ( | 5 | − | x | ) | − | 40 | + | 24 | x |
= | 10 | ( | 5 | − | x | ) | − | 2 | x | ( | 5 | − | x | ) | − | x | ( | 5 | − | x | ) | ( | 5 | − | x | ) | − | 40 | + | 24 | x |
= | 10 | × | 5 | − | 10 | x | − | 2 | x | ( | 5 | − | x | ) | − | x | ( | 5 | − | x | ) | ( | 5 | − | x | ) | − | 40 | + | 24 |
= | 50 | − | 10 | x | − | 2 | x | ( | 5 | − | x | ) | − | x | ( | 5 | − | x | ) | ( | 5 | − | x | ) | − | 40 | + | 24 | x |
= | 10 | + | 14 | x | − | 2 | x | ( | 5 | − | x | ) | − | x | ( | 5 | − | x | ) | ( | 5 | − | x | ) |
= | 10 | + | 14 | x | − | 2 | x | × | 5 | + | 2 | x | x | − | x | ( | 5 | − | x | ) | ( | 5 | − | x | ) |
= | 10 | + | 14 | x | − | 10 | x | + | 2 | x | x | − | x | ( | 5 | − | x | ) | ( | 5 | − | x | ) |
= | 10 | + | 4 | x | + | 2 | x | x | − | x | ( | 5 | − | x | ) | ( | 5 | − | x | ) |
= | 10 | + | 4 | x | + | 2 | x | x | − | x | × | 5 | ( | 5 | − | x | ) | + | x | x | ( | 5 | − | x | ) |
= | 10 | + | 4 | x | + | 2 | x | x | − | x | × | 5 | × | 5 | + | x | × | 5 | x |
= | 10 | + | 4 | x | + | 2 | x | x | − | x | × | 25 | + | x | × | 5 | x | + | x |
= | 10 | − | 21 | x | + | 2 | x | x | + | x | × | 5 | x | + | x | x | ( | 5 | − | x | ) |
= | 10 | − | 21 | x | + | 2 | x | x | + | x | × | 5 | x | + | x | x | × | 5 |
10 | − | 21 | x | + | 2 | x | x | + | x | × | 5 | x | + | x | x | × | 5 | = | 0 |