Perform the indicated operation.
-$$\left[ \begin{array} { l l }
5 & 4
\end{array} \right] + \left[ \begin{array} { r }
- 2 \
5
\end{array} \right]$$
A) $\left[ \begin{array} { l l } 3 & 9 \end{array} \right]$

B) $\left[ \begin{array} { l } 3 \ 9 \end{array} \right]$

C) Not defined

D) $\left[ \begin{array} { r r } 5 & - 2 \ 4 & 5 \end{array} \right]$

Question

Perform the indicated operation.
-$$\left[ \begin{array} { l l } 
5 & 4
\end{array} \right] + \left[ \begin{array} { r } 
- 2 \
5
\end{array} \right]$$
A) $\left[ \begin{array} { l l } 3 & 9 \end{array} \right]$

B) $\left[ \begin{array} { l } 3 \ 9 \end{array} \right]$

C) Not defined

D) $\left[ \begin{array} { r r } 5 & - 2 \ 4 & 5 \end{array} \right]$

Quizplus · Accepted Answer

Matrix addition is only defined for matrices of the same dimensions. The first matrix is 1x2 and the second is 2x1, so the operation is not defined.

Perform the Indicated Operation [54]+[−25]\left[ \begin{array} { l l } 5 & 4\end{array} \right] + \left[ \begin{array} { r } - 2 \\5\end{array} \right][5​4​]+[−25​]

Perform the Indicated Operation $\left[ \begin{array} { l l } 5 & 4\end{array} \right] + \left[ \begin{array} { r } - 2 \\5\end{array} \right]$