Question

What is the product?

Answer 1

`\large\boxed{\left[\begin{array}{ccc}6&18\end{array}\right]}`

Explanation:

`\left[\begin{array}{ccc}4&2\end{array}\right] *\left[\begin{array}{ccc}-2&5\\7&-1\end{array}\right] =\left[\begin{array}{ccc}(4)(-2)+(2)(7)&(4)(5)+(2)(-1)\end{array}\right] \\\\=\left[\begin{array}{ccc}-8+14&20-2\end{array}\right] =\left[\begin{array}{ccc}6&18\end{array}\right]`