143 10 | × | 300 | x | ( | 464 | − | 1 2 | x | ) | + | 360 | × | 804 | × | 430 | = | 0 |
方程左边 = | 4290 | x | ( | 464 | − | 1 2 | x | ) | + | 124459200 |
4290 | x | ( | 464 | − | 1 2 | x | ) | + | 124459200 | = | 0 |
方程左边 = | 4290 | x | × | 464 | − | 4290 | x | × | 1 2 | x | + | 124459200 |
= | 1990560 | x | − | 2145 | x | x | + | 124459200 |
1990560 | x | − | 2145 | x | x | + | 124459200 | = | 0 |