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10 September, 21:24

Simplify (-2 + 10i) (-2 - 10i)

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Answers (2)
  1. 10 September, 21:26
    0
    (-2+10i) (-2-10i) = 104
  2. 10 September, 21:29
    0
    104

    Step-by-step explanation:

    (-2 + 10i) (-2 - 10i)

    Distribute using FOIL (first, outer, inner, last).

    (-2) (-2) + (-2) (-10i) + (10i) (-2) + (10i) (-10i)

    4 + 20i - 20i - 100i²

    4 - 100i²

    4 + 100

    104
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