The number of common tangents to the circle

Question:

The number of common tangents to the circle $x^{2}+y^{2}-4 x-6 y-12=0$ and $x^{2}+y^{2}+6 x$ $+18 y+26=0$, is :

  1. 3

  2. 4

  3. 1

  4. 2

Correct Option: 1

Solution:

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