Answer
$AB=\begin{pmatrix}
16 & 8\\
6 & -17
\end{pmatrix}$
$tr(AB)=\begin{pmatrix}
16 & 6\\
8 &-17
\end{pmatrix}$
Work Step by Step
$AB$
$=\begin{pmatrix}
-2 & 4 & 2 & 6\\
-1 & -1 & 5 & 0
\end{pmatrix}\begin{pmatrix}
-3 & 0\\
2 & 2\\
1 & -3\\
0 & 1
\end{pmatrix}$
$=\begin{pmatrix}
16 & 8\\
6 & -17
\end{pmatrix}$
$tr(AB)=\begin{pmatrix}
16 & 6\\
8 &-17
\end{pmatrix}$
