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4 November, 20:31

Simplify (7-5i) (-3+9i) - (5+6i) ^2

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  1. 4 November, 20:41
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    (-21 + 63i + 15i - 45i^2) - (25 + 60i + 36i^2) =

    (-21 + 78i + 45) - (-11 + 60i) =

    24 + 78i - 60i + 11 =

    35 + 18i
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