How do you evaluate #(- 8- 5i ) ( - 3- 3i )#?

1 Answer
Oct 19, 2017

Expand by using the FOIL method.

Explanation:

First of all, you cannot evaluate the expression because it is an expression; you can only simplify it - that's what I'm going to tell you.

When simplifying two binomials, the easiest method is to FOIL the expand.

Calculator@TutorVista

#(~8-5i)(~3-3i)#

#=24+24i+15i+15i^2#

#=24+39i+15i^2#

I'm going to rearrange the expression so it is easier to read.

#=15i^2+39i+24#

That's it.

Hope this helps :)