| 150 | ( | 1 | + | x | ) | + | 150 | ( | 1 | + | x | ) | + | ( | 1 | + | x | ) | ( | 1 | + | x | ) | + | 216 | = | 0 |
| Left side of the equation = | 150 | × | 1 | + | 150 | x | + | 150 | ( | 1 | + | x | ) | + | ( | 1 | + | x | ) | ( | 1 | + | x | ) | + | 216 |
| = | 150 | + | 150 | x | + | 150 | ( | 1 | + | x | ) | + | ( | 1 | + | x | ) | ( | 1 | + | x | ) | + | 216 |
| = | 366 | + | 150 | x | + | 150 | ( | 1 | + | x | ) | + | ( | 1 | + | x | ) | ( | 1 | + | x | ) |
| = | 366 | + | 150 | x | + | 150 | × | 1 | + | 150 | x | + | ( | 1 | + | x | ) | ( | 1 | + | x | ) |
| = | 366 | + | 150 | x | + | 150 | + | 150 | x | + | ( | 1 | + | x | ) | ( | 1 | + | x | ) |
| = | 516 | + | 300 | x | + | ( | 1 | + | x | ) | ( | 1 | + | x | ) |
| = | 516 | + | 300 | x | + | 1 | ( | 1 | + | x | ) | + | x | ( | 1 | + | x | ) |
| = | 516 | + | 300 | x | + | 1 | × | 1 | + | 1 | x | + | x | ( | 1 | + | x | ) |
| = | 516 | + | 300 | x | + | 1 | + | 1 | x | + | x | ( | 1 | + | x | ) |
| = | 517 | + | 301 | x | + | x | ( | 1 | + | x | ) |
| = | 517 | + | 301 | x | + | x | × | 1 | + | x | x |
| = | 517 | + | 302 | x | + | x | x |
| 517 | + | 302 | x | + | x | x | = | 0 |