\(\begin{vmatrix} -2 & 1 & 1 \\ 2 & 1 & k \\1 & 3 & -1 \end{vmatrix}\) = 23
- 1
-
2
- 3
- 4
The correct answer is: B
Explanation
-2(-1 - 3k) - 1(-2 -k) + 1(6 - 1) = 237k = 14
k = 2