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Mathematics 17 Online
OpenStudy (anonymous):

x^2+y^2-2x-6y-6=0 find the center and radius of each circle

OpenStudy (agreene):

center is (1,3) http://www.wolframalpha.com/input/?i=circle+x%5E2%2By%5E2-2x-6y-6%3D0

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