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Find the equation of the circle which touches x-axis and whose centre is (1, 2).
Answers (1)
It is given that circle with centre (1,2) touches x axis
Radius of the circle is r = 2
So equation of the required circle is
(x-1)2+(y-2)2=(2)2
x2-2x+1+y2-4y+4=4
x2+y2-2x-4y+1=0
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