annameghan
annameghan
03-10-2017
Mathematics
contestada
multiple (8+3i)(3+5i)
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Аноним
Аноним
03-10-2017
The answer would be 9+49 i
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filipp555
filipp555
03-10-2017
Use FOIL: (8)(3) + (3i)(5i) + (3i)(3) + (8)(5i)
Simplify: (24) + (15i^2) + (9i) + (40i)
Since i^2= -1: 24 + (-15) + 9i + 40i
Group like terms: 49i + 9
Answer: 49i+9
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