Question

Please help! Correct answer only, please! Find the following product if possible. Explain if it is not possible. A. B. C. D.

Answer 1

Answer: B

`=\begin{pmatrix}7&13\\ 19&18\end{pmatrix}`

Explanation:

`\begin{pmatrix}1&3\\ -2&5\end{pmatrix}\begin{pmatrix}-2&1\\ 3&4\end{pmatrix}=\begin{pmatrix}1\cdot \left(-2\right)+3\cdot \:3&1\cdot \:1+3\cdot \:4\\ \left(-2\right)\left(-2\right)+5\cdot \:3&\left(-2\right)\cdot \:1+5\cdot \:4\end{pmatrix}=\begin{pmatrix}7&13\\ 19&18\end{pmatrix}`