SOLUTION: Find the center and radius of the circle with the equation x^2 + 18x = y - y^2 - 61

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Question 409024: Find the center and radius of the circle with the equation
x^2 + 18x = y - y^2 - 61
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
x^2 + 18x + y^2 - y = -61

completing the squares ___ (x^2 + 18x + 81) + (y^2 - y + .25) = -61 + 81 + .25

(x + 9)^2 + (y - .5)^2 = (4.5)^2