13 2 | × | 13 2 | + | ( | x | − | 16 5 | ) | ( | x | − | 16 5 | ) | = | x | x |
方程左边 = | 169 4 | + | ( | x | − | 16 5 | ) | ( | x | − | 16 5 | ) |
169 4 | + | ( | x | − | 16 5 | ) | ( | x | − | 16 5 | ) | = | x | x |
方程左边 = | 169 4 | + | x | ( | x | − | 16 5 | ) | − | 16 5 | ( | x | − | 16 5 | ) |
= | 169 4 | + | x | x | − | x | × | 16 5 | − | 16 5 | ( | x | − | 16 5 | ) |
= | 169 4 | + | x | x | − | 16 5 | x | − | 16 5 | x | + | 16 5 | × | 16 5 |
= | 169 4 | + | x | x | − | 16 5 | x | − | 16 5 | x | + | 256 25 |
= | 5249 100 | + | x | x | − | 32 5 | x |
5249 100 | + | x | x | − | 32 5 | x | = | x | x |