| x | ( | x | + | 3 | ) | ( | x | + | 3 2 | ) | + | 17 2 | = | 0 |
| 方程左边 = | x | x | ( | x | + | 3 2 | ) | + | x | × | 3 | ( | x | + | 3 2 | ) | + | 17 2 |
| = | x | x | x | + | x | x | × | 3 2 | + | x | × | 3 | ( | x | + | 3 2 | ) | + | 17 2 |
| = | x | x | x | + | x | x | × | 3 2 | + | x | × | 3 | x | + | x | × | 3 | × | 3 2 |
| = | x | x | x | + | x | x | × | 3 2 | + | x | × | 3 | x | + | x | × | 9 2 | + | 17 2 |
| x | x | x | + | x | x | × | 3 2 | + | x | × | 3 | x | + | 9 2 | x | + | 17 2 | = | 0 |