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25 August, 15:53

Question 2

What is the product of 3 - 5i and 2 + 7i?

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Answers (1)
  1. 25 August, 16:11
    0
    41 + 11i

    Step-by-step explanation:

    Note that i² = - 1

    Given

    (3 - 5i) (2 + 7i) ← expand using FOIL

    = 6 + 21i - 10i - 35i² ← collect like terms

    = 6 + 11i + 35

    = 41 + 11i
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