The answer (o/p in current branch) is giving two points so I think that `circles are not only touching externally` so the property (`distance between the center points should be the sum or difference of the radii.) `will not work here. The reason I find it absurd because the answer seems too unsimplified and long to mee but now I think that answer can be unsimplified and long because of the ugly circles equation we have used here.