The rectangular hyperbola \( x y=1 \) cuts the circle \( x^{2}+y^{2...

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The rectangular hyperbola \( x y=1 \) cuts the circle \( x^{2}+y^{2}=1 \) at four points. The sum of abscisae of these points is
\( \mathrm{P} \)
(A) 1
(B) 0
(C) 2
(D) none of these
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