| 1 | + | ( | 1 4 | + | x | ÷ | 2 | ) | ( | 1 2 | + | x | ) | = | 0 |
| 方程左边 = | 1 | + | 1 4 | ( | 1 2 | + | x | ) | + | x | ÷ | 2 | × | ( | 1 2 | + | x | ) |
| = | 1 | + | 1 4 | × | 1 2 | + | 1 4 | x | + | x | × | 1 2 | ( | 1 2 | + | x | ) |
| = | 1 | + | 1 8 | + | 1 4 | x | + | x | × | 1 2 | ( | 1 2 | + | x | ) |
| = | 9 8 | + | 1 4 | x | + | x | × | 1 2 | ( | 1 2 | + | x | ) |
| = | 9 8 | + | 1 4 | x | + | x | × | 1 2 | × | 1 2 | + | x | × | 1 2 | x |
| = | 9 8 | + | 1 4 | x | + | x | × | 1 4 | + | x | × | 1 2 | x |
| = | 9 8 | + | 1 2 | x | + | x | × | 1 2 | x |
9 8 | + | 1 2 | x | + | x | × | 1 2 | x | = | 0 |