\( e_{1} \) and \( e_{2} \) are the eccentricities of the hyperbola...

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\( e_{1} \) and \( e_{2} \) are the eccentricities of the hyperbolas \( x y=c^{2} \) and \( x^{2}-y^{2}=c^{2} \), then \( e_{1}^{2}+e_{2}^{2}= \)
(A) 1
(B) 4
\( \mathrm{P} \)
(C) 8
(D) 6
W)
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