Question

Multiply -3 - 7i and -1 +i

Answer 1

We have the following:

`(-3-7i)\cdot(-1+i)`

multiply:

`\begin{gathered} 3-3i+7i-7i^2 \\ i^2=-1 \\ 3+4i+7 \\ 10+4i \end{gathered}`

The answer is 10 + 4i