SOLUTION: I really need help with problem. I have tried everything for the first answer and it keeps being wrong and I can not figure out why. Please help me. Find the product of −5

Algebra ->  Complex Numbers Imaginary Numbers Solvers and Lesson  -> Lesson -> SOLUTION: I really need help with problem. I have tried everything for the first answer and it keeps being wrong and I can not figure out why. Please help me. Find the product of −5      Log On


   

Question 1015377: I really need help with problem. I have tried everything for the first answer and it keeps being wrong and I can not figure out why. Please help me.
Find the product of −5−4i and its conjugate. The answer is a+bi where
Answer by macston(5194) About Me  (Show Source):
You can put this solution on YOUR website!
Conjugate:(-5+4i)
.
%28-5-4i%29%28-5%2B4i%29=25-20i%2B20i-16i%5E2=25-16%28-1%29=25%2B16=41
.