If the circles `x^(2)+y^(2)-10x+2y+10=0` and `x^(2)+y^(2)-4x-6y-12=0` touch each other then the slope of the common tangent at the point of contact of the circles is

find the coordinates of the points at which the circle x^(2)+y^(2)-4x-2y=4 and x^(2)+y^(2)-12x-8y=12 touch each other.Find the equation of the common tangent at the point of contact.

The circles x^(2)+y^(2)+6x+6y=0 and x^(2)+y^(2)-12x-12y=0

Prove that the circle x^(2)+y^(2)+2x+2y+1=0 and circle x^(2)+y^(2)-4x-6y-3=0 touch each other.

The circles x^(2)+y^(2)-12x-12y=0 and x^(2)+y^(2)+6x+6y=0 .touch each other externally touch each other internally intersect at two points none of these

If the circles x^(2)+y^(2)-8x-2y+8=0 and x^(2)+y^(2)-2x+6y+6=0 touch each other and Q(x,y) is the point of contact then Qx + Qy =

The circles x^(2)+y^(2)-2x-4y+1=0 and x^(2)+y^(2)+4x+4y-1=0 touch internally touch externally have 3x+4y-1=0 as the common tangent at the point of contact have 3x+4y+1=0 as the common tangent at the point of contact