Find the product AB, if possible.
-$A = \left[ \begin{array} { l l l } - 5 & 2 & 1 \end{array} \right] , B = \left[ \begin{array} { r r r } - 6 & - 8 & 3 \ - 3 & 7 & - 4 \ - 9 & 2 & 5 \end{array} \right]$
A) $[ 1556 - 18 ]$
B)
$\left[ \begin{array} { r } 15 \ 56 \ - 18 \end{array} \right]$
C)
$$\left[ \begin{array} { r r r }
- 5 & 2 & 1 \
- 6 & - 8 & 3 \
- 3 & 7 & - 4 \
- 9 & 2 & 5
\end{array} \right] \quad

D)
\left[ \begin{array} { r r r }
30 & - 16 & 3 \
15 & 14 & - 4 \
45 & 4 & 5
\end{array} \right]$$

Question

Find the product AB, if possible.
-$A = \left[ \begin{array} { l l l } - 5 & 2 & 1 \end{array} \right] , B = \left[ \begin{array} { r r r } - 6 & - 8 & 3 \ - 3 & 7 & - 4 \ - 9 & 2 & 5 \end{array} \right]$
A) $[ 1556 - 18 ]$
B)
$\left[ \begin{array} { r } 15 \ 56 \ - 18 \end{array} \right]$
C)
$$\left[ \begin{array} { r r r } 
- 5 & 2 & 1 \
- 6 & - 8 & 3 \
- 3 & 7 & - 4 \
- 9 & 2 & 5
\end{array} \right] \quad

D)
 \left[ \begin{array} { r r r } 
30 & - 16 & 3 \
15 & 14 & - 4 \
45 & 4 & 5
\end{array} \right]$$

Quizplus · Accepted Answer

The product AB is a 1x3 matrix: $[-5 \times -6 + 2 \times -3 + 1 \times -9, -5 \times -8 + 2 \times 7 + 1 \times 2, -5 \times 3 + 2 \times -4 + 1 \times 5] = [15, 56, -18]$.

Find the Product AB, If Possible A) [1556−18][ 1556 - 18 ][1556−18]

Find the Product AB, If Possible A) $[ 1556 - 18 ]$