10 | = | - | 5 | ( | t | − | 2 | ) | ( | t | + | 1 | ) |
方程右边 = | - | 5 | t | ( | t | + | 1 | ) | + | 5 | × | 2 | ( | t | + | 1 | ) |
= | - | 5 | t | ( | t | + | 1 | ) | + | 10 | ( | t | + | 1 | ) |
= | - | 5 | t | t | − | 5 | t | × | 1 | + | 10 | ( | t | + | 1 | ) |
= | - | 5 | t | t | − | 5 | t | + | 10 | ( | t | + | 1 | ) |
= | - | 5 | t | t | − | 5 | t | + | 10 | t | + | 10 | × | 1 |
= | - | 5 | t | t | − | 5 | t | + | 10 | t | + | 10 |
= | - | 5 | t | t | + | 5 | t | + | 10 |
10 | = | - | 5 | t | t | + | 5 | t | + | 10 |