Question: Verify that $A(B+C)=(A B+A C)$, when
$\mathrm{A}=\left[\begin{array}{cc}2 & 3 \\ -1 & 4 \\ 0 & 1\end{array}\right], \mathrm{B}=\left[\begin{array}{cc}5 & -3 \\ 2 & 1\end{array}\right]$ and $\mathrm{C}=\left[\begin{array}{cc}-1 & 2 \\ 3 & 4\end{array}\right]$
