What is the center and the radius of the circle x2 plus y2 equals 12x -10y -12?

What is the center and the radius of the circle x2 plus y2 equals 12x -10y -12?
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Answer :

Equation of circle: x^2 +y^2 = 12x-10y-12Completing the squares: (x-6)^2 +(y+5)^2 = 49So center of circle is at (6, -5) and its radius is 7 units
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