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AP EAMCET201725 Apr 2017Morning ShiftMathematicsCircleActual

The combined equation of the direct common tangents of the circles x^2+y^2-2 x-2 y-2=0 and x^2+y^2+4 x+6 y+12=0 , is

Options

  1. A3 x^2+10 x y+3 y^2-4 x+4 y-4=0
  2. B75 x^2-9 y^2-80 x y+200 x+500 y-2900=0
  3. C9 x^2-16 y^2-18 x+96 y-135=0
  4. D15 x^2-24 x y+8 y^2-18 x-8 y-73=0

Correct answer

D. 15 x^2-24 x y+8 y^2-18 x-8 y-73=0

Step-by-step solution

No solution. Refer to answer key.

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