Question

Can someone pls help me solve this with the multiplying stuff

Answer 1

`(-6+7i)(2-i)`

General rule for multipliting complex numbers:

`(x+yi)(u+vi)=(xu-yv)+(xv+yu)i`

Then, for the given multiplication you get:

`\begin{gathered} (-6+7i)(2-i)=((-6)(2)-(7)(-1))+((-6)(-1)+(7)(2))i \\ \\ =(-12+7)+(6+14)i \\ \\ =-5+20i \end{gathered}`

Then, the product of given complex numbers is -5+20i

`(-6+7i)(2-i)=-5+20i`