A. x2+y2+2x+4y+4=0
B. x2+y2-2x+4y+4=0
C. x2+y2+2x+4y-4=0
D. x2+y2+2x-4y+4=0
The inverse point of (1, 2) w.r.t the circle x2+y2=25 is (5, k), then k=
If the points (2, 3), (0, 2), (4, 5) and (0, t) are concyclic, then t=
For the circle x2+y2-4x-2y-36=0, the point (3, 5)
The polars of two points A(1, 3) and B(2, -1) w.r.to the circle x2+y2=9 intersect at C. Then the polar of C w.r.to the circle is
The equation of the chord of the circle x2+y2-4x+6y-3=0 having (1, -2) as its midpoint is
From the point A(0,3) on the circle x2+4x+(y-3)2=0, a chord, AB is drawn and extended to a point P, such that AP = 2AB. The locus of P is
If α,β,γ are the roots of x3-x2+33x+5=0 and A=s1,B=s2,C=s3 then the descending order of A,B,C is
If the circles x2+y2+2x-2y+4=0 cuts the circle x2+y2+4x-2fy+2=0 orthogonally, then f=
If the circles x2+y2-4x+6y+8=0, x2+y2-10x-6y+14=0 touch each other , then the point of contact is
If the lines x+2y+k=0, x+y-3=0 are conjugate w.r.t the circle x2+yu2=9 then k=