Geometry Quiz
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GEOMETRY & CONIC SECTIONS
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An ellipse has foci at F1(−1,2)F_1(-1,2) and F2(7,2)F_2(7,2). For any point P(x,y)P(x,y) on the ellipse, PF1+PF2=12PF_1+PF_2=12. Which equation represents the ellipse? (No vertices are given.)
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