56 | x | − | 580 | − | 40 | x | − | ( | 56 | x | x | × | 13 100 | − | 5 | x | ) | x | × | 12 100 | = | 0 |
方程左边 = | 16 | x | − | 580 | − | ( | 56 | x | x | × | 13 100 | − | 5 | x | ) | x | × | 12 100 |
16 | x | − | 580 | − | ( | 56 | x | x | × | 13 100 | − | 5 | x | ) | x | × | 12 100 | = | 0 |
方程左边 = | 16 | x | − | 580 | − | 56 | x | x | × | 13 100 | x | × | 12 100 | + | 5 | x | x |
= | 16 | x | − | 580 | − | 546 625 | x | x | x | + | 3 5 | x | x |
16 | x | − | 580 | − | 546 625 | x | x | x | + | 3 5 | x | x | = | 0 |