| x | x | x | ÷ | 2 | × | ( | 1 | + | x | ) | ( | 1 | + | x | ) | = | 0 |
| 方程左边 = | x | x | x | × | 1 2 | × | 1 | ( | 1 | + | x | ) | + | x | x | x | × | 1 2 | x | ( | 1 | + | x | ) |
| = | x | x | x | × | 1 2 | ( | 1 | + | x | ) | + | x | x | x | × | 1 2 | x | ( | 1 | + | x | ) |
| = | x | x | x | × | 1 2 | × | 1 | + | x | x | x | × | 1 2 | x | + | x | x |
| = | x | x | x | × | 1 2 | + | x | x | x | × | 1 2 | x | + | x | x | x |
| = | x | x | x | × | 1 2 | + | x | x | x | × | 1 2 | x | + | x | x | x |
| = | x | x | x | × | 1 2 | + | x | x | x | × | 1 2 | x | + | x | x | x |
| x | x | x | × | 1 2 | + | x | x | x | × | 1 2 | x | + | x | x | x | = | 0 |