314159 100000 | ( | x | + | 5 | ) | ( | x | + | 5 | ) | x | = | 192 |
| 方程左边 = | 314159 100000 | x | ( | x | + | 5 | ) | x | + | 314159 100000 | × | 5 | ( | x | + | 5 | ) | x |
| = | 314159 100000 | x | ( | x | + | 5 | ) | x | + | 314159 20000 | ( | x | + | 5 | ) | x |
| = | 314159 100000 | x | x | x | + | 314159 100000 | x | × | 5 | x | + | 314159 20000 | ( | x | + | 5 | ) | x |
| = | 314159 100000 | x | x | x | + | 314159 20000 | x | x | + | 314159 20000 | ( | x | + | 5 | ) | x |
| = | 314159 100000 | x | x | x | + | 314159 20000 | x | x | + | 314159 20000 | x | x | + | 314159 20000 | × | 5 |
| = | 314159 100000 | x | x | x | + | 314159 20000 | x | x | + | 314159 20000 | x | x | + | 314159 4000 | x |
314159 100000 | x | x | x | + | 314159 20000 | x | x | + | 314159 20000 | x | x | + | 314159 4000 | x | = | 192 |