Question

12 can you do it so I can check my answer no need to explain

Answer 1

Given:

`(2+i)(-3+5i)`

apply the complex arithmetic rule,

`(a+bi)(c+di)=(ac-bd)+(ad+bc)i`
`\begin{gathered} a=2 \\ b=1 \\ c=-3 \\ d=5 \end{gathered}`

thus,

`\begin{gathered} (2(-3)-1\cdot5)+(2\cdot5+1\cdot(-3))i \\ -11+7i \end{gathered}`