If \( x=9 \) is the chord of contact of the hyperbola P \( x^{2}-y^...

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If \( x=9 \) is the chord of contact of the hyperbola
P \( x^{2}-y^{2}=9 \), then the equation of the corresponding

W pair of tangents is
(1) \( 9 x^{2}-8 y^{2}+18 x-9=0 \)
(2) \( 9 x^{2}-8 y^{2}-18 x+9=0 \)
(3) \( 9 x^{2}-8 y^{2}-18 x-9=0 \)
(4) \( 9 x^{2}-8 y^{2}+18 x+9=0 \)
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