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Recent problems solved by 'adesouza'

adesouza answered: 1 problems
Complex_Numbers/58948: can you please help me understand how to simplify this problem (3+2i)(5-i)
i keep getting different answers each time i try it the first step that i did was to use the distributive property and then i got 15-3i+10i-2 then i simplified it and got 7i+13
1 solutions
Answer 40989 by adesouza(1) About Me  on 2006-11-04 13:56:16 (Show Source):
You can put this solution on YOUR website!
(3+2i)(5-i)
=15 - 3i + 10i - 2i^2
=15 + 7i - 2(-1) (Note: i^2 = -1)
=15 + 7i + 2
=7i + 17