\( \mathrm{P} \) The number of common tangents of the circles W \( ...

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\( \mathrm{P} \)
The number of common tangents of the circles
W \( x^{2}+y^{2}-2 x-1=0 \) and \( x^{2}+y^{2}-2 y-7=0 \) is
(1) 1
(2) 2
(3) 3
(4) 4
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