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

[" Given that,for all real "x," the expression "(x-2x+4)/(x^(2)+2x+4)" lies between "(1)/(3)" and "],[" which the expression "(9.3^(2x)+6.3^(x)+4)/(9.3^(2x)-63^(x)+4)" lies are "],[[" (a) "(1)/(3)" and "3," (b) "-2" and "0," (c) "-1" and "1]]

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