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[" Given that,for all real "x" ,the expr...

[" Given that,for all real "x" ,the expression "(x^(2)-2x+4)/(x^(2)+2x+4)" lies between "(1)/(3)" and "3" .The values between "],[" which the expression "(9.3^(2x)+6.3^(x)+4)/(9.3^(2x)-6.3^(x)+4)" lies are "],[[" (A) "1/3" and "3," (B) "-2" and "0," (C) "-1" and "1," (D) "0" and "2]]

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