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text If  end text x subscript 1 end subscript comma x subscript 2 end subscript comma x subscript 3 end subscript are three non zero real numbers such that open parentheses x subscript 1 end subscript superscript 2 end superscript plus x subscript 2 end subscript superscript 2 end superscript close parentheses open parentheses x subscript 2 end subscript superscript 2 end superscript plus x subscript 3 end subscript superscript 2 end superscript close parentheses less or equal than open parentheses x subscript 1 end subscript x subscript 2 end subscript plus x subscript 2 end subscript x subscript 3 end subscript close parentheses to the power of 2 end exponent blank text then the G.M. of  end text x subscript 1 end subscript comma x subscript 2 end subscript comma x subscript 3 end subscript text  is end text

  1. x subscript 1 end subscript    
  2. x subscript 2 end subscript    
  3. x subscript 3 end subscript    
  4. fraction numerator x subscript 1 end subscript x subscript 2 end subscript x subscript 3 end subscript over denominator 3 end fraction    

The correct answer is: x subscript 2 end subscript

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