Perform the indicated operation, if possible.
-$\left[ \begin{array} { l l l } - 2 & 8 & 4 \end{array} \right] - \left[ \begin{array} { l l } 4 & 3 \end{array} \right]$
A) Not defined
B) $\left[ \begin{array} { l l l } - 6 & 8 & 1 \end{array} \right]$
C) $\left[ \begin{array} { l l l } - 6 & 5 & 4 \end{array} \right]$
D) $\left[ \begin{array} { l l l } - 6 & 5 & 1 \end{array} \right]$

Question

Quizplus · Accepted Answer

Subtraction of matrices is only defined when the matrices have the same dimensions. The first matrix is 1x3 and the second is 1x2, so the operation is not defined.

Perform the Indicated Operation, If Possible [−284]−[43]\left[ \begin{array} { l l l } - 2 & 8 & 4 \end{array} \right] - \left[ \begin{array} { l l } 4 & 3 \end{array} \right][−2​8​4​]−[4​3​]

Perform the Indicated Operation, If Possible $\left[ \begin{array} { l l l } - 2 & 8 & 4 \end{array} \right] - \left[ \begin{array} { l l } 4 & 3 \end{array} \right]$