In calculating the approximate value of the fourth root of 624, which of the following approximation formula can be used? O f(x) = 25 + 1/500 ( x - 625) O f(x) = 25 + 1/20 ( x - 625) O f(x) = 5+ 1/500 ( x - 625) O f(x) = 5 + 1/125 ( x - 625)

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