[" 28.A circle touches "x" axis at "(3,0...

[" 28.A circle touches "x" axis at "(3,0)" and makes intercept of "8],[" units on positive y-axis,its equation is "],[[" (a) "x^(2)-y^(2)-6x-10y+9=0],[" (b) "x^(2)+y^(2)+6x+10y+9=0],[" (c) "x^(2)+y^(2)-6x-5y+20=0],[" (d) "x^(2)+y^(2)+6x-10y+21=0]]

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