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X2 y2 4x 2y 20 0
X2 y2 4x 2y 20 0 pictures 5
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X2 y2 4x
X2 y2 4x 2y 20 0
the equation x2 y2 4x 2y 20 0 describes
x2 y2 4x 2y 20 0
