| - | 2 | k | + | 6 | = | ( | 2 | k | − | 6 | ) | ( | 4 | k | − | 6 | ) |
| Right side of the equation = | 2 | k | ( | 4 | k | − | 6 | ) | − | 6 | ( | 4 | k | − | 6 | ) |
| = | 2 | k | × | 4 | k | − | 2 | k | × | 6 | − | 6 | ( | 4 | k | − | 6 | ) |
| = | 8 | k | k | − | 12 | k | − | 6 | ( | 4 | k | − | 6 | ) |
| = | 8 | k | k | − | 12 | k | − | 6 | × | 4 | k | + | 6 | × | 6 |
| = | 8 | k | k | − | 12 | k | − | 24 | k | + | 36 |
| = | 8 | k | k | − | 36 | k | + | 36 |
| - | 2 | k | + | 6 | = | 8 | k | k | − | 36 | k | + | 36 |
| k1= | 5 4 |
| k2=3 |