SOLUTION: (-6-5i)(1+3i)

Algebra ->  Complex Numbers Imaginary Numbers Solvers and Lesson -> SOLUTION: (-6-5i)(1+3i)      Log On


   

Question 903771: (-6-5i)(1+3i)
Answer by AlgebraLady88(44) About Me  (Show Source):
You can put this solution on YOUR website!
Remember that in complex numbers, i^2 = -1
We will use FOIL to solve this problem.
(-6 - 5i )(1+ 3i)
= -6 -18i - 5i -15i^2
= -6 - 23i - 15i^2
= -6 - 23i -15 (-1)
= -6 - 23i + 15
= 9-23i