If tangent to the circle x2+y2=5 at (1,−2) also touches the circle x – InterviewSolution

1.	If tangent to the circle x2+y2=5 at (1,−2) also touches the circle x2+y2−8x+6y+20=0 at point (h,k), then the value of h+k is
Answer» If tangent to the circle $x^{2} + y^{2} = 5$ at $(1, - 2)$ also touches the circle $x^{2} + y^{2} - 8 x + 6 y + 20 = 0$ at point $(h, k),$ then the value of $h + k$ is

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