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OpenStudy (anonymous):
I need some assistance checking my work. Find the center and radius:
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OpenStudy (anonymous):
\[3x^2-12x+3y^2+18y-9=0\] I got: \[C(6,-9) =\sqrt{50}\]
OpenStudy (anonymous):
\[C(6,-9) r=\sqrt{50}\]
OpenStudy (anonymous):
center should be (2, -3) radius 4... http://www.wolframalpha.com/input/?i=3x%5E2-12x%2B3y%5E2%2B18y-9%3D0
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