If the chords of contact of the tangents from a point \( \mathrm{P}...

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If the chords of contact of the tangents from a point
\( \mathrm{P} \) on the circle \( x^{2}+y^{2}=a^{2} \) to the circles \( x^{2}+y^{2}=b^{2} \)

W touch the circle \( x^{2}+y^{2}=c^{2} \), then the roots of the equation \( a x^{2}+2 b x+c=0 \), are
(1) Imaginary
(2) Real and equal
(3) Real and unequal (4) Rational
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