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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