4y^(2)+12x-12y-39=0

The circle 4x^(2)+4y^(2)-12x-12y+9=0

The circle 4x^(2)+4y^(2)-12x-12y+9=0

Show that the circle 4x^(2)+4y^(2)-12x-12y+9=0 touches both the coordinate axes.

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

The co-ordinates of foci of an ellipse 3x^(2)+4y^(2)+12x+16y-8=0 is :

The co-ordinates of foci of an ellipse 3x^(2)+4y^(2)+12x+16y-8=0 is :

If circles x^(2) + y^(2) - 3x + ky - 5 = 0 " and " 4x^(2) + 4y^(2) - 12x- y - 9 = 0 are concentric , then k =

The vertex of the parabola : 4y^(2)+12x-20y+67=0 is :

Find the vertex and focus of 4y^(2)+12x-20y+67=0