(x-1)(y-2)=5 and (x-1)^2+(y+2)^2=r^2 int...

`(x-1)(y-2)=5` and `(x-1)^2+(y+2)^2=r^2` intersect at four points A, B, C, D and if centroid of `triangle ABC` lies on line `y = 3x-4` , then locus of D is

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