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31 January, 09:05

Evaluate (2 - 5i) (p + q) i when p = 2 and q = 5i

a. 29i

b. 291-20

C.-21i

d. 29

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Answers (1)
  1. 31 January, 09:36
    0
    A. 29i

    Step-by-step explanation:

    Step 1: Plug in given variables

    (2 - 5i) (2 + 5i) i

    Step 2: Difference of squares (expand)

    (4 - 25i²) i

    Step 3: Imaginary numbers rules

    (4 - 25 (-1)) i

    Step 4: Combine like terms

    (4 + 25) i

    (29) i

    Your final answer will be 29i
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