Perform the operation or operations when possible.
-$\left[ \begin{array} { l l l } - 1 & 8 & 4 \end{array} \right] - \left[ \begin{array} { l l } 4 & 3 \end{array} \right]$
A) $\left[ \begin{array} { l l l } - 5 & 5 & 1 \end{array} \right]$
B) $\left[ \begin{array} { l l l } - 5 & 8 & 1 \end{array} \right]$
C) $\left[ \begin{array} { l l l } - 5 & 5 & 4 \end{array} \right]$
D) They cannot be subtracted.

Question

Quizplus · Accepted Answer

Matrix subtraction is only defined for matrices of the same dimensions. The first matrix is 1x3 and the second is 1x2, so they cannot be subtracted.

Perform the Operation or Operations When Possible [−184]−[43]\left[ \begin{array} { l l l } - 1 & 8 & 4 \end{array} \right] - \left[ \begin{array} { l l } 4 & 3 \end{array} \right][−1​8​4​]−[4​3​]

Perform the Operation or Operations When Possible $\left[ \begin{array} { l l l } - 1 & 8 & 4 \end{array} \right] - \left[ \begin{array} { l l } 4 & 3 \end{array} \right]$