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X2(y2+2y+2)+y 2 4xy+2x 4yu003d0
X2(y2+2y+2)+y 2 4xy+2x 4yu003d0 pictures 5
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X2(y2+2y+2)+y 2 4xy+2x 4yu003d0
X2(y2+2y+2)+y 2 4xy+2x 4yu003d0
