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AP EAMCET · Maths · Circle

The equation of the pair of lines joining the origin to the points of intersection of two circles \(x^2+y^2-4 x+8 y+5=0\) and \(x^2+y^2+2 x+4 y-3=0\) is

  1. A \(13 x^2+6 x y-28 y^2=0\)
  2. B \(x y-28 y^2=0\)
  3. C \((x+4)(x-5)=0\)
  4. D \(13 x^2+68 x y-28 y^2=0\)
Verified Solution

Answer & Solution

Correct Answer

(D) \(13 x^2+68 x y-28 y^2=0\)

Step-by-step Solution

Detailed explanation

Then, equation of common chord in given by…