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Question: Answered & Verified by Expert
If the circles $x^2+y^2+2 h x+2 k y=0$ and $x^2+y^2+2 h^{\prime} x+2 k^{\prime} y=0$ touch each other, then $\frac{h^{\prime} k}{h k^{\prime}}=$
MathematicsCircleAP EAMCETAP EAMCET 2017 (25 Apr Shift 2)
Options:
  • A $0$
  • B $1$
  • C $2$
  • D $-1$
Solution:
1625 Upvotes Verified Answer
The correct answer is: $1$
No solution. Refer to answer key.

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