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Conics for Coneheads (part 3 of 4): Degenerative Conics

A http://www.door2math.com production. Dr. Pan makes learning math Fun. Complete the square to determine if the equation is an ellipse, a hyperbola, a parabola, or degenerate conic. If the equation is that of an ellipse, find the center and the length of the major and minor axes. If it is a hyperbola, find the center and determine which way it opens. If it is a parabola, find the vertex and determine the way it opens. 1. 3x^2-6(x+y)=9 2. 4x^2+y^2=8(x+y) 3. 9x^2-y^2+18x+6y=0 4.2x^2+4=4x+y^2 5. 9x^2-y^2+18x+6y=9
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