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The centre and radius of :
C1 : (2,1) , rad = 1unit
C2 : (6,4) , rad = 4 units
Let the point of touching be Q(x,y)
If a line is drawn through the point of contact taking the centres in one line then , the point of contact divides the line in the ratio 1:4.
So apply the section formula to obtain the point Q.
It comes to be (14/5,8/5)
Also , I think it should be Q*25 and not (Q-25), but if it is (Q-25) the answer is (-103/5)
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