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

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

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

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

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

Examine whether the two circles x^2+y^2-2x-4y=0 and x^2+y^2-8y-4=0 touch each other externally or internally .

Examine whether the two circles x^2+y^2-2x-4y=0 and x^2+y^2-8y-4=0 touch each other externally or internally .

The two circles : x^2+y^2 =ax and x^2+y^2=c^2 (c > 0) touch each other if :

The circles x^(2)+y^(2)-12x-12y=0 and x^(2)+y^(2)+6x+6y=0:( a) intersect in two points.(b) touch each other externally.(c) touch each other internally.(d) None of these

Two circles x^(2) + y^(2) -2kx = 0 and x^(2) + y^(2) - 4x + 8y + 16 = 0 touch each other externally.Then k is