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x=((sqrta+1)+(sqrta-1))/((sqrta+1)-(sqrt...

`x=((sqrta+1)+(sqrta-1))/((sqrta+1)-(sqrta-1)) , y=((sqrta+1)-(sqrta-1))/((sqrta+1)+(sqrta-1))` find the value of `(x^2-xy+y^2)/(x^2+xy+y^2)=?`

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