Math
posted by Abbey(Please help) .
Find the center, vertices, foci, and eccentricity of the ellipse.
9x^2 + 4y^2  36x + 8y + 31 = 0
My answer was:
center=(2,1)
v=(2,10)(2,10)
f=(2,11)(2,11)
e=11/3
Where did I make a mistake?
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