Pre Calculus

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Simplify 2(3-i^14)- (5-i^23)
3-i

Simplify: (5-3i)^2
16+30i

Simplify (3+2i) / (4-5i)
(2/41)-(23/41)i

is this right?

  • Pre Calculus -

    the second one should be
    (5-3i)^2
    = 25 - 30i + 9i^2
    = 16 - 30i

    the other two are correct

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