If the circles `x^(2)+y^(2)+4x-2y-220=0, x^(2)+y^(2)-4x+4y-92=0` touch each other then the points of contact is

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

Show that the circles x^(2)+y^(2)-8x-2y+8=0 and x^(2)+y^(2)-2x+6y+6=0 touch each other and find the point of contact.

If the circles x^(2)+y^(2)+4x+8y=0andx^(2)+y^(2)+8x+2ky=0 touch each other , then =.........

Show that the circles x^(2) +y^(2) -4x-6y-12=0 and 5(x^(2)+y^(2))-8x - 14y - 32 = 0 touch each other and find their point of contact.

Show that the circles x^(2)+y^(2)-10x+4y-20=0 and x^(2)+y^(2)+14x-6y+22=0 touch each other.Find the coordinates of the point of contact and the equation of the common tangent at the point of contact.