<PRE><B>Question 1033689</B>
x^2 + y^2 - 2x + 8y + 8 = 0
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Rearrange::
x^2 - 2x   + y^2 + 8y  = -8
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Complete the square on the x-terms and on the y-terms ::
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x^2 - 2x +1 + y^2 + 8y + 16 = -8 + 1 + 16
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(x-1)^2 + (y+4)^2 = 9
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Center:: (1,-4)
radius:: sqrt(9) = 3
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Cheers,
Stan H.
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