A. x2+y2+2x+4y+24/25=0

B. x2+y2-2x-4y-44/25=0

C. 2x2+2y2+x-y+14/25=0

D. x2+y2+2x-4y+44/25=0

The equation of the circle passing through the points (4, 1), (6, 5) and having the centre on line 4x+y-16=0 is

From any point on the circle x^{2}+y^{2}+2gx+2fy+c=0 tangents are drawn to the circle x^{2}+y^{2}+2gx+2fy+c sin^{2}α+(g^{2}+f^{2}) 13cos^{2} α =0

The area of the triangle formed by the positive x-axis and the tangent and the normal at (1, √3) to the circle x^{2}+y^{2}=4 is

The locus of the points from which the lengths of the tangents to the two circles x^{2} + y^{2} + 4x + 3 = 0, x^{2} + y^{2}-6x +5 = 0 are in the ratio 2 : 3 is a circle with centre

The equation to the line joining the centers of the circles belonging to the coaxial system of Circles 4x^{2}-4y^{2}-12x+ 6y-3+λ(x+2y-6)=0 is