Respuesta :

We have the following:

[tex](-3-7i)\cdot(-1+i)[/tex]

multiply:

[tex]\begin{gathered} 3-3i+7i-7i^2 \\ i^2=-1 \\ 3+4i+7 \\ 10+4i \end{gathered}[/tex]

The answer is 10 + 4i