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Multiply (8+3i)(3+5i).
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1 vote
Multiply (8+3i)(3+5i).

User Bill Barksdale
by
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1 Answer

7 votes

Answer:

9 + 49i

Explanation:

note that i² = - 1

given

(8 + 3i)(3 + 5i) ← expand using FOIL

= 24 + 40i + 9i + 15i²

= 24 + 40i + 9i + 15(- 1) ← collect like terms

= 24 + 49i - 15

= 9 + 49i

User Toadzky
by
6.7k points
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