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[" 16.If "x" is a real number,then "x^(2...

[" 16.If "x" is a real number,then "x^(2)+x+1" is "],[" (a) less than "(3)/(4)],[" (b) zero for at least one value of "x],[" (c) always negative "],[" (d) greater than or equal to "(3)/(4)]

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