Evaluate the expression. $$\left[ \begin{array} { c c }
- 4 & 0 \
4 & - 4
\end{array} \right] + \left[ \begin{array} { c c }
9 & 1 \
- 4 & - 1
\end{array} \right] + \left[ \begin{array} { c c }
- 11 & - 12 \
13 & 7
\end{array} \right]$$

Question

Evaluate the expression.​ $$\left[ \begin{array} { c c } 
- 4 & 0 \
4 & - 4
\end{array} \right] + \left[ \begin{array} { c c } 
9 & 1 \
- 4 & - 1
\end{array} \right] + \left[ \begin{array} { c c } 
- 11 & - 12 \
13 & 7
\end{array} \right]$$ ​

Quizplus · Accepted Answer

To find the sum of the matrices, add the corresponding elements: $(-4+9-11) = -6$, $0+1-12 = -11$, $4-4+13 = 13$, and $(-4-1+7) = 2$, resulting in the matrix $\left[ \begin{array} { c c } -6 & -11 \ 13 & 2 \end{array} \right]$.

Evaluate the Expression ​ A) [−6−11132]\left[ \begin{array} { c c } - 6 & - 11 \\13 & 2\end{array} \right][−613​−112​]

Evaluate the Expression
A) $\left[ \begin{array} { c c } - 6 & - 11 \\13 & 2\end{array} \right]$