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[" 3.If "(x)/(y)+(y)/(x)=-1," where "x,y...

[" 3.If "(x)/(y)+(y)/(x)=-1," where "x,y!=0" then the value of "(x^(3)-y^(3))" is "],[[" (a) "1," (b) "-1," (c) "0," (d) "(1)/(2)]]

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