SOLUTION: I need to check an answer which I have got for evaluating a coplex number The question is: (3+j3)(2+j5) The answer I've got is: =-9+j21

Algebra ->  Complex Numbers Imaginary Numbers Solvers and Lesson -> SOLUTION: I need to check an answer which I have got for evaluating a coplex number The question is: (3+j3)(2+j5) The answer I've got is: =-9+j21      Log On


   

Question 463449: I need to check an answer which I have got for evaluating a coplex number
The question is:
(3+j3)(2+j5)
The answer I've got is:
=-9+j21
Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!
if you have:
%283%2Bj%2A3%29%282%2Bj%2A5%29
%283%2A2%2B3%2Aj%2A5%2Bj%2A3%2A2%2Bj%2A3%2Aj%2A5%29
%286%2Bj%2A15%2Bj%2A6%2Bj%5E2%2A15%29
%286%2Bj%2A21%2Bj%5E2%2A15%29
but if you have:
%283%2Bj%5E3%29%282%2Bj%5E5%29
%283%2A2%2B3%2Aj%5E5%2Bj%5E3%2A2%2Bj%5E3%2Aj%5E5%29
%286%2B3j%5E5%2Bj%5E8%2B2j%5E3%29
%28j%5E8%2B3j%5E5%2B2j%5E3%2B6%29