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August 27th, 2013, 02:01 PM  #1 
Newbie Joined: Aug 2013 Posts: 1 Thanks: 0  Question about equation of a circle.
So i'm reviewing some basic algebra for a class and seem to have forgotten some things... Prove that the equation x^2+y^2+x=0 represents a circle and find the center and radius. I do fine with circle equations that require completing the square but am not sure what to do here. Thank you so much in advance!

August 27th, 2013, 02:16 PM  #2 
Global Moderator Joined: Oct 2008 From: London, Ontario, Canada  The Forest City Posts: 7,948 Thanks: 1139 Math Focus: Elementary mathematics and beyond  Re: Question about equation of a circle. Hence the equation represents a circle with center (1/2, 0) and radius 1/2. 

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