Question 992219
x^2+y^2+6x-6y-107=0 What is the Radius and Center of a circle
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x^2+y^2+6x-6y = 107
Complete the squares for x and y:
{{{x^2 + 6x + 9 + y^2 - 6y + 9 = 107 + 9 + 9 = 125}}}
{{{(x+3)^2 + (y-3)^2 = 125}}}
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--> center at (-3,3)
{{{r = sqrt(125) = 5sqrt(5)}}}