Matrices And Determinants

$\left[\begin{array}{ccc}1 & 0 & 0 \\ 0 & -2 & 0 \\ 0 & 0 & 2\end{array}\right]$

$\left[\begin{array}{ccc}0 & -2 & 0 \\ 0 & 0 & -2 \\ -2 & 0 & 0\end{array}\right]$

$\left[\begin{array}{ccc}-2 & 0 & 0 \\ 0 & 0 & -2 \\ 0 & -2 & 0\end{array}\right]$

$\left[\begin{array}{ccc}0 & 0 & -2 \\ -2 & 0 & 0 \\ 0 & -2 & 0\end{array}\right]$