| 44 | ÷ | s | × | ( | s | + | 1 | ) | ( | s | + | 4 | ) | ÷ | ( | 1 | + | ( | 44 | ÷ | s | × | ( | s | + | 1 | ) | ( | s | + | 4 | ) | ) | ) | = | 0 |
| 方程两边同时乘以: | s |
| 44 | ( | s | + | 1 | ) | ( | s | + | 4 | ) | ÷ | ( | 1 | + | ( | 44 | ÷ | s | × | ( | s | + | 1 | ) | ( | s | + | 4 | ) | ) | ) | = | 0 |
| 44 | s | ( | s | + | 4 | ) | ÷ | ( | 1 | + | ( | 44 | ÷ | s | × | ( | s | + | 1 | ) | ( | s | + | 4 | ) | ) | ) | + | 44 | × | 1 | ( | s | + | 4 | ) | ÷ | ( | 1 | + | ( | 44 | ÷ | s | × | ( | s | + | 1 | ) | ( | s | + | 4 | ) | ) | ) | = | 0 |
| 44 | s | ( | s | + | 4 | ) | ÷ | ( | 1 | + | ( | 44 | ÷ | s | × | ( | s | + | 1 | ) | ( | s | + | 4 | ) | ) | ) | + | 44 | ( | s | + | 4 | ) | ÷ | ( | 1 | + | ( | 44 | ÷ | s | × | ( | s | + | 1 | ) | ( | s | + | 4 | ) | ) | ) | = | 0 |
| 方程两边同时乘以: | ( | 1 | + | ( | 44 | ÷ | s | × | ( | s | + | 1 | ) | ( | s | + | 4 | ) | ) | ) |
| 44 | s | ( | s | + | 4 | ) | + | 44 | ( | s | + | 4 | ) | ÷ | ( | 1 | + | ( | 44 | ÷ | s | × | ( | s | + | 1 | ) | ( | s | + | 4 | ) | ) | ) | × | ( | 1 | + | ( | 44 | ÷ | s | × | ( | s | + | 1 | ) | ( | s | + | 4 | ) | ) | ) | = | 0 |
| 44 | s | s | + | 44 | s | × | 4 | + | 44 | ( | s | + | 4 | ) | ÷ | ( | 1 | + | ( | 44 | ÷ | s | × | ( | s | + | 1 | ) | ( | s | + | 4 | ) | ) | ) | × | ( | 1 | + | ( | 44 | ÷ | s | × | ( | s | + | 1 | ) | ( | s | + | 4 | ) | ) | ) | = | 0 |
| 44 | s | s | + | 176 | s | + | 44 | ( | s | + | 4 | ) | ÷ | ( | 1 | + | ( | 44 | ÷ | s | × | ( | s | + | 1 | ) | ( | s | + | 4 | ) | ) | ) | × | ( | 1 | + | ( | 44 | ÷ | s | × | ( | s | + | 1 | ) | ( | s | + | 4 | ) | ) | ) | = | 0 |
| 方程两边同时乘以: | ( | 1 | + | ( | 44 | ÷ | s | × | ( | s | + | 1 | ) | ( | s | + | 4 | ) | ) | ) |
| 44 | s | s | ( | 1 | + | ( | 44 | ÷ | s | × | ( | s | + | 1 | ) | ( | s | + | 4 | ) | ) | ) | + | 176 | s | ( | 1 | + | ( | 44 | ÷ | s | × | ( | s | + | 1 | ) | ( | s | + | 4 | ) | ) | ) | + | 44 | ( | s | + | 4 | ) | ( | 1 | + | ( | 44 | ÷ | s | × | ( | s | + | 1 | ) | ( | s | + | 4 | ) | ) | ) | = | 0 |
| 44 | s | s | × | 1 | + | 44 | s | s | ( | 44 | ÷ | s | × | ( | s | + | 1 | ) | ( | s | + | 4 | ) | ) | + | 176 | s | ( | 1 | + | ( | 44 | ÷ | s | × | ( | s | + | 1 | ) | ( | s | + | 4 | ) | ) | ) | + | 44 | = | 0 |
| 44 | s | s | + | 44 | s | s | ( | 44 | ÷ | s | × | ( | s | + | 1 | ) | ( | s | + | 4 | ) | ) | + | 176 | s | ( | 1 | + | ( | 44 | ÷ | s | × | ( | s | + | 1 | ) | ( | s | + | 4 | ) | ) | ) | + | 44 | ( | s | + | 4 | ) | = | 0 |
| 44 | s | s | + | 44 | × | 1 | s | × | 44 | ÷ | 1 | × | ( | s | + | 1 | ) | ( | s | + | 4 | ) | + | 176 | s | = | 0 |
| 44 | s | s | + | 1936 | s | ( | s | + | 1 | ) | ( | s | + | 4 | ) | + | 176 | s | ( | 1 | + | ( | 44 | ÷ | s | × | ( | s | + | 1 | ) | ( | s | + | 4 | ) | ) | ) | + | 44 | ( | s | + | 4 | ) | = | 0 |
| 44 | s | s | + | 1936 | s | s | ( | s | + | 4 | ) | + | 1936 | s | × | 1 | ( | s | + | 4 | ) | + | 176 | = | 0 |
| 44 | s | s | + | 1936 | s | s | ( | s | + | 4 | ) | + | 1936 | s | ( | s | + | 4 | ) | + | 176 | s | = | 0 |
| 44 | s | s | + | 1936 | s | s | s | + | 1936 | s | s | × | 4 | + | 1936 | = | 0 |
| 44 | s | s | + | 1936 | s | s | s | + | 7744 | s | s | + | 1936 | s | = | 0 |
| 44 | s | s | + | 1936 | s | s | s | + | 7744 | s | s | + | 1936 | s | = | 0 |
| 44 | s | s | + | 1936 | s | s | s | + | 7744 | s | s | + | 1936 | s | = | 0 |
| 44 | s | s | + | 1936 | s | s | s | + | 7744 | s | s | + | 1936 | s | = | 0 |
| 44 | s | s | + | 1936 | s | s | s | + | 7744 | s | s | + | 1936 | s | = | 0 |
| 44 | s | s | + | 1936 | s | s | s | + | 7744 | s | s | + | 1936 | s | = | 0 |
| 44 | s | s | + | 1936 | s | s | s | + | 7744 | s | s | + | 1936 | s | = | 0 |
| 44 | s | s | + | 1936 | s | s | s | + | 7744 | s | s | + | 1936 | s | = | 0 |
| 44 | s | s | + | 1936 | s | s | s | + | 7744 | s | s | + | 1936 | s | = | 0 |