Matrices And Determinants

$\left[\begin{array}{ccc}-1 & 19 & 31 \\ 31 & -19 & -11 \\ 19 & 19 & -19\end{array}\right]$

$\left[\begin{array}{ccc}-1 & 31 & 19 \\ 19 & -19 & 19 \\ 31 & -11 & -19\end{array}\right]$

$\left[\begin{array}{ccc}-1 & 19 & 31 \\ -31 & -19 & -11 \\ 19 & 19 & -19\end{array}\right]$

$\left[\begin{array}{ccc}-1 & -31 & 19 \\ 19 & -19 & 19 \\ 31 & -11 & -19\end{array}\right]$