Work out; (5 + 3i)(4 + 6i)

      

Work out;
(5 + 3i)(4 + 6i)

  

Answers

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5(4) + 5(6i) + 4(3i) + (3i)(6i)
= 20 + 30i + 12i + 18i2
= 20 + 42i + 18(-1)
= 20 + 42i - 18
= 2 + 42i

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sharon kalunda answered the question on May 2, 2019 at 06:07

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