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Mathematics 11 Online
OpenStudy (anonymous):

Find the radius and center of the circle with equation x2+y2-10x+6y+36=0 and so far this is what i got: x2-10x+25+y2+6y+9=-36+25+9 (x-5)2+(y+3)2=-2 Is this correct? Is it possible to have an irrational radius? because if what i did was right r=sqrt(-2).

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