10071 2500 | ( | x | + | 2957 10000 | ) | ( | 2957 10000 | − | x | ) | = | 9542 3125 | ( | 2957 10000 | − | x | ) | + | 3 2500 | ( | x | + | 2957 10000 | ) |
| 方程左边 = | 10071 2500 | x | ( | 2957 10000 | − | x | ) | + | 10071 2500 | × | 2957 10000 | ( | 2957 10000 | − | x | ) |
| = | 10071 2500 | x | ( | 2957 10000 | − | x | ) | + | 29779947 25000000 | ( | 2957 10000 | − | x | ) |
| = | 10071 2500 | x | × | 2957 10000 | − | 10071 2500 | x | x | + | 29779947 25000000 | ( | 2957 10000 | − | x | ) |
| = | 29779947 25000000 | x | − | 10071 2500 | x | x | + | 29779947 25000000 | ( | 2957 10000 | − | x | ) |
| = | 29779947 25000000 | x | − | 10071 2500 | x | x | + | 29779947 25000000 | × | 2957 10000 | − | 29779947 25000000 | x |