| ( | 1 | − | 33 1000 | + | x | ) | ( | 1 | + | x | ) | = | 1 | + | 33 1000 |
| 方程左边 = | 1 | ( | 1 | + | x | ) | − | 33 1000 | ( | 1 | + | x | ) | + | x | ( | 1 | + | x | ) |
| = | 1 | × | 1 | + | 1 | x | − | 33 1000 | ( | 1 | + | x | ) | + | x | ( | 1 | + | x | ) |
| = | 1 | + | 1 | x | − | 33 1000 | ( | 1 | + | x | ) | + | x | ( | 1 | + | x | ) |
| = | 1 | + | 1 | x | − | 33 1000 | × | 1 | − | 33 1000 | x | + | x | ( | 1 | + | x | ) |
| = | 1 | + | 1 | x | − | 33 1000 | − | 33 1000 | x | + | x | ( | 1 | + | x | ) |
| = | 967 1000 | + | 967 1000 | x | + | x | ( | 1 | + | x | ) |
| = | 967 1000 | + | 967 1000 | x | + | x | × | 1 | + | x | x |
| = | 967 1000 | + | 1967 1000 | x | + | x | x |
967 1000 | + | 1967 1000 | x | + | x | x | = | 1 | + | 33 1000 |
| 方程右边 = | 1033 1000 |
967 1000 | + | 1967 1000 | x | + | x | x | = | 1033 1000 |
| x2= | 33 1000 |