A. x2+y2-18x-16y+120=0

B. x2+y2+18x+16y-120=0

C. x2+y2-18x-16y-120=0

D. x2+y2+18x+16y+120=0

A: The polar of (2, 3) with respect to the circle x^{2}+y^{2}-4x-6y+5=0 is 2x+3y=0

R: The polar of (x_{1}, y_{1}) with respect to the circle S=0 is S_{1}=0

The locus of poles of tangets to the circle (x-p)^{2}+y^{2}=b^{2} w.r.t the circle x^{2}+y^{2}= a^{2} is

The equation of the circle, with centre (3, -1) and which cuts off a chord of length 6 on the line 2x-5y+18=0 is

If 1,ω,ω<sup>2</sup> are the cube roots of unity, then (1-ω+ ω<sup>2</sup>)5+(1+ω- ω<sup>2</sup>)<sup>5</sup> is equal to

The length of the tangent from a point on the circle x^{2}+y^{2}+4x-6y-12=0 to the circle x^{2}+y^{2}+4x-6y+4=0 is