| ( | 1 5 | + | 6 | × | 9091 1000 | × | 10 | − | 4 | − | x | ) | ( | 1 5 | − | x | ) | = | ( | 1 5 | + | x | ) | ( | 1 5 | + | x | ) |
| 方程左边 = | 1 5 | ( | 1 5 | − | x | ) | + | 6 | × | 9091 1000 | × | 10 | ( | 1 5 | − | x | ) | − | 4 | ( | 1 5 | − | x | ) | − | x | ( | 1 5 | − | x | ) |
| = | 1 5 | ( | 1 5 | − | x | ) | + | 27273 50 | ( | 1 5 | − | x | ) | − | 4 | ( | 1 5 | − | x | ) | − | x | ( | 1 5 | − | x | ) |
| = | 1 5 | × | 1 5 | − | 1 5 | x | + | 27273 50 | ( | 1 5 | − | x | ) | − | 4 | ( | 1 5 | − | x | ) | − | x | ( | 1 5 | − | x | ) |
| = | 1 25 | − | 1 5 | x | + | 27273 50 | ( | 1 5 | − | x | ) | − | 4 | ( | 1 5 | − | x | ) | − | x | ( | 1 5 | − | x | ) |
| = | 1 25 | − | 1 5 | x | + | 27273 50 | × | 1 5 | − | 27273 50 | x | − | 4 | ( | 1 5 | − | x | ) | − | x | ( | 1 5 | − | x | ) |
| = | 1 25 | − | 1 5 | x | + | 27273 250 | − | 27273 50 | x | − | 4 | ( | 1 5 | − | x | ) | − | x | ( | 1 5 | − | x | ) |
| = | 27283 250 | − | 27283 50 | x | − | 4 | ( | 1 5 | − | x | ) | − | x | ( | 1 5 | − | x | ) |
| = | 27283 250 | − | 27283 50 | x | − | 4 | × | 1 5 | + | 4 | x | − | x | ( | 1 5 | − | x | ) |
| = | 27283 250 | − | 27283 50 | x | − | 4 5 | + | 4 | x | − | x | ( | 1 5 | − | x | ) |
| = | 27083 250 | − | 27083 50 | x | − | x | ( | 1 5 | − | x | ) |
| = | 27083 250 | − | 27083 50 | x | − | x | × | 1 5 | + | x | x |
| = | 27083 250 | − | 27093 50 | x | + | x | x |
27083 250 | − | 27093 50 | x | + | x | x | = | ( | 1 5 | + | x | ) | ( | 1 5 | + | x | ) |
| 方程右边 = | 1 5 | ( | 1 5 | + | x | ) | + | x | ( | 1 5 | + | x | ) |
| = | 1 5 | × | 1 5 | + | 1 5 | x | + | x | ( | 1 5 | + | x | ) |
| = | 1 25 | + | 1 5 | x | + | x | ( | 1 5 | + | x | ) |
| = | 1 25 | + | 1 5 | x | + | x | × | 1 5 | + | x | x |
| = | 1 25 | + | 2 5 | x | + | x | x |
27083 250 | − | 27093 50 | x | + | x | x | = | 1 25 | + | 2 5 | x | + | x | x |