If a chord is drwan through any point P of the circle x2+y2+4x−6y− – InterviewSolution

1.	If a chord is drwan through any point P of the circle x2+y2+4x−6y−12=0 become secant for circle x2+y2+4x−6y+4=0 intersecting it at points at A and B, then PA⋅PB is
Answer» If a chord is drwan through any point $P$ of the circle $x^{2} + y^{2} + 4 x - 6 y - 12 = 0$ become secant for circle $x^{2} + y^{2} + 4 x - 6 y + 4 = 0$ intersecting it at points at $A$ and $B$ , then $P A \cdot P B$ is

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