SOLUTION: find the center of a circle with the equation x^2+y^2+2x+4y-9=0

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Question 352310: find the center of a circle with the equation x^2+y^2+2x+4y-9=0
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
(x+1)^2 + (y+2)^2 = 14