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Q:

If a2=b+c, b2=c+a  and c2=a+b then the  value of $$ {1\over{1+a}}+{1\over{1+b}}+{1\over{1+c}}$$ is

  • 1
    abc
  • 2
    1
  • 3
    0
  • 4
    2
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Answer : 2. "1"

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