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30 June, 08:11

Simplify the expression shown below. (6+8i) (4-7i)

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  1. 30 June, 08:54
    0
    (6+8i) (4-7i)

    =6 (4-7i) + 8i (4-7i)

    = (6) (4) - (6) (7i) + (8i) (4) - (8i) (7i)

    = 24 - 42i + 32i - 56i^2

    = 24 - 42i + 32i - 56 (-1)

    = 24 - 42i + 32i + 56

    = 24 + 56 - 42i + 32i

    = 80 - 10i (final answer)
  2. 30 June, 11:56
    0
    Simplify the expression shown below. (6+8i) (4-7i)
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