| ( | ( | ( | 3459 | ( | 1 | + | x | ) | ) | ( | 1 | + | x | ) | ) | ( | 1 | + | x | ) | ) | ( | 1 | + | x | ) | = | 8000 |
| 方程左边 = | ( | ( | 3459 | ( | 1 | + | x | ) | ) | ( | 1 | + | x | ) | ) | ( | 1 | + | x | ) | ( | 1 | + | x | ) |
| = | ( | 3459 | ( | 1 | + | x | ) | ) | ( | 1 | + | x | ) | ( | 1 | + | x | ) | ( | 1 | + | x | ) |
| = | 3459 | ( | 1 | + | x | ) | ( | 1 | + | x | ) | ( | 1 | + | x | ) | ( | 1 | + | x | ) |
| = | 3459 | × | 1 | ( | 1 | + | x | ) | ( | 1 | + | x | ) | ( | 1 | + | x | ) | + | 3459 | x | ( | 1 | + | x | ) | ( | 1 | + | x | ) | ( | 1 | + | x | ) |
| = | 3459 | ( | 1 | + | x | ) | ( | 1 | + | x | ) | ( | 1 | + | x | ) | + | 3459 | x | ( | 1 | + | x | ) | ( | 1 | + | x | ) | ( | 1 | + | x | ) |
| = | 3459 | × | 1 | ( | 1 | + | x | ) | ( | 1 | + | x | ) | + | 3459 | x | ( | 1 | + | x | ) | ( | 1 | + | x | ) | + | 3459 | x | ( | 1 | + | x | ) | ( | 1 | + | x | ) |
| = | 3459 | ( | 1 | + | x | ) | ( | 1 | + | x | ) | + | 3459 | x | ( | 1 | + | x | ) | ( | 1 | + | x | ) | + | 3459 | x | ( | 1 | + | x | ) | ( | 1 | + | x | ) | ( | 1 | + | x | ) |
| = | 3459 | × | 1 | ( | 1 | + | x | ) | + | 3459 | x | ( | 1 | + | x | ) | + | 3459 | x | ( | 1 | + | x | ) | ( | 1 | + | x | ) | + | 3459 | x |
| = | 3459 | ( | 1 | + | x | ) | + | 3459 | x | ( | 1 | + | x | ) | + | 3459 | x | ( | 1 | + | x | ) | ( | 1 | + | x | ) | + | 3459 | x | ( | 1 | + | x | ) |
| = | 3459 | × | 1 | + | 3459 | x | + | 3459 | x | ( | 1 | + | x | ) | + | 3459 | x | ( | 1 | + | x | ) | ( | 1 | + | x | ) | + | 3459 |
| = | 3459 | + | 3459 | x | + | 3459 | x | ( | 1 | + | x | ) | + | 3459 | x | ( | 1 | + | x | ) | ( | 1 | + | x | ) | + | 3459 | x |
| = | 3459 | + | 3459 | x | + | 3459 | x | × | 1 | + | 3459 | x | x | + | 3459 | x | ( | 1 | + | x | ) |
| = | 3459 | + | 3459 | x | + | 3459 | x | + | 3459 | x | x | + | 3459 | x | ( | 1 | + | x | ) | ( | 1 | + | x | ) |
| = | 3459 | + | 6918 | x | + | 3459 | x | x | + | 3459 | x | ( | 1 | + | x | ) | ( | 1 | + | x | ) | + | 3459 | x |
| = | 3459 | + | 6918 | x | + | 3459 | x | x | + | 3459 | x | × | 1 | ( | 1 | + | x | ) | + | 3459 | x |
| = | 3459 | + | 6918 | x | + | 3459 | x | x | + | 3459 | x | ( | 1 | + | x | ) | + | 3459 | x | x |
| = | 3459 | + | 6918 | x | + | 3459 | x | x | + | 3459 | x | × | 1 | + | 3459 | x | x |
| = | 3459 | + | 6918 | x | + | 3459 | x | x | + | 3459 | x | + | 3459 | x | x | + | 3459 |
| = | 3459 | + | 10377 | x | + | 3459 | x | x | + | 3459 | x | x | + | 3459 | x | x |
| = | 3459 | + | 10377 | x | + | 3459 | x | x | + | 3459 | x | x | + | 3459 | x | x |
| = | 3459 | + | 10377 | x | + | 3459 | x | x | + | 3459 | x | x | + | 3459 | x | x |
| = | 3459 | + | 10377 | x | + | 3459 | x | x | + | 3459 | x | x | + | 3459 | x | x |
| = | 3459 | + | 10377 | x | + | 3459 | x | x | + | 3459 | x | x | + | 3459 | x | x |
| = | 3459 | + | 10377 | x | + | 3459 | x | x | + | 3459 | x | x | + | 3459 | x | x |
| = | 3459 | + | 10377 | x | + | 3459 | x | x | + | 3459 | x | x | + | 3459 | x | x |