22 | − | 2 | ( | 2 | k | − | 1 | ) | = | ( | 2 | k | − | 1 | ) | × | 2 |
方程左边 = | 22 | − | 2 | × | 2 | k | + | 2 | × | 1 |
= | 22 | − | 4 | k | + | 2 |
= | 24 | − | 4 | k |
24 | − | 4 | k | = | ( | 2 | k | − | 1 | ) | × | 2 |
方程右边 = | 2 | k | × | 2 | − | 1 | × | 2 |
= | 4 | k | − | 2 |
24 | − | 4 | k | = | 4 | k | − | 2 |
- | 4 | k | − | 4 | k | = | - | 2 | − | 24 |
- | 8 | k | = | - | 2 | − | 24 |
- | 8 | k | = | - | 26 |
26 | = | 8 | k |
8 | k | = | 26 |
k | = | 26 | ÷ | 8 |
= | 26 | × | 1 8 |
= | 13 | × | 1 4 |
k | = | 13 4 |
k | = | 3.25 |