Find the equations to the common tangents of the circles `x^2+y^2-2x-6y+9=0` and `x^2+y^2+6x-2y+1=0`

Find the equation of the tangent to the circle x^(2)+y^(2)-30x+6y+109=0 at (4,-1)

Find all the common tangent to the circles x^(2)+y^(2)-2x-6y+9=0 and x^(2)+y^(2)+6x-2y+1=0. Find the length of the direct common tangent and indirect common tangent.

The lengths of the common tangents of the circles x^(2)+y^(2)+4x=0 and x^(2)+y^(2)-6x=0 is

Find the number of common tangents to the circles x^2+y^2=4 and x^2+y^2-6x-8y=24

The number of common tangents of the circles x^(2) +y^(2) =16 and x^(2) +y^(2) -2y = 0 is :