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[" 278.If "x<0.y<0.x+y+(x)/(y)=(1)/(2)" ...

[" 278.If "x<0.y<0.x+y+(x)/(y)=(1)/(2)" and "(x+y)((x)/(y))=-(1)/(2)" then: "],[[" (A) "x=y," (B) "x!=y," (C) ",x=2y]]

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