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Complex numbers

  1. Apr 15, 2007 #1
    How can i find The imaginary part of (1-2i)^2-i.

    This is what i have done so far:
    (1-2i)^2 (1-2i)^-i

  2. jcsd
  3. Apr 15, 2007 #2
    Use the polar form of 1-2i.
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