$$\begin{bmatrix} 1 & k & 0 \\\\ 0 & -4-k*k & k \\\\ 6 & 2k & k \end{bmatrix}$$
You asked:
Evaluate the expression: \(\begin{bmatrix}1 & k & 0 \\ 0 & -4 - k k & k \\ 6 & 2 k & k\end{bmatrix}\)
$$\begin{bmatrix} 1 & k & 0 \\\\ 0 & -4-k*k & k \\\\ 6 & 2k & k \end{bmatrix}$$
You asked: