9108 25 | = | 341 1000 | + | 249 1000000 | ( | 900 | + | x | ) | ( | 900 | − | x | ) |
方程右边 = | 341 1000 | + | 249 1000000 | × | 900 | ( | 900 | − | x | ) | + | 249 1000000 | x | ( | 900 | − | x | ) |
= | 341 1000 | + | 2241 10000 | ( | 900 | − | x | ) | + | 249 1000000 | x | ( | 900 | − | x | ) |
= | 341 1000 | + | 2241 10000 | × | 900 | − | 2241 10000 | x | + | 249 1000000 | x | ( | 900 | − | x | ) |
= | 341 1000 | + | 20169 100 | − | 2241 10000 | x | + | 249 1000000 | x | ( | 900 | − | x | ) |
= | 202031 1000 | − | 2241 10000 | x | + | 249 1000000 | x | ( | 900 | − | x | ) |
= | 202031 1000 | − | 2241 10000 | x | + | 249 1000000 | x | × | 900 | − | 249 1000000 | x | x |
= | 202031 1000 | − | 2241 10000 | x | + | 2241 10000 | x | − | 249 1000000 | x | x |
= | 202031 1000 | − | 0 | x | − | 249 1000000 | x | x |
9108 25 | = | 202031 1000 | − | 0 | x | − | 249 1000000 | x | x |