Question
Evaluate: $\quad 2\left[\begin{array}{ll}-1 & 0 \\ 2-3\end{array}\right]+\left[\begin{array}{ll}3 & 3 \\ \hline 5 & 0\end{array}\right]$
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Answer
$2\left[\begin{array}{cc}-1 & 0 \\ \hline2-3\end{array}\right]+\left[\begin{array}{ll}3 & 3 \\ 5 & \hline0\end{array}\right]$$=\left[\begin{array}{ll}-2 & 0 \\ \hline 4 & -6\end{array}\right]+\left[\begin{array}{ll}3 & 3 \\ \hline5 & 0\end{array}\right]$$=\left[\frac{-2+3}{4+5} \frac{0+3}{-6+0}]\right.$=$\left[\begin{array}{cc}1 & 3 \\ \hline9 &-6\end{array}\right]$
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