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Mathematics 21 Online
OpenStudy (anonymous):

Complete the square to determine whether the equation represents an ellipse, parabola, hyperbola or degenerate conic. Sketch the graph of the equation. If the equation has no graph, explain why. x^2+6x+12y+9=0 I believe it's a parabola; which would be, (x+3)^2=-12y. Find the vertex, directrix and focus.

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