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Solving a equation of a circle

  1. Aug 9, 2012 #1
    Find the center and radius of the circle using the equation:

    x^2 + y^2 + 2√2x - 4√5y = 5

    I just cant seem to solve this equation into the form (x-h)^2 + (y-k)^2 = r^2 in order to get the center and radius.

    Any help would be appreciated
  2. jcsd
  3. Aug 9, 2012 #2
    You would need to show us what you have tried. First thing you do is group up the terms and complete the square.
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