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    Question

    If 3x + (1/3x) = 9 then find 27x³ + (1/27x³ ) =

    ?
    A 602 Correct Answer Incorrect Answer
    B 702 Correct Answer Incorrect Answer
    C 700 Correct Answer Incorrect Answer
    D 802 Correct Answer Incorrect Answer

    Solution

    If  3x + (1/3x) =  N then  27x³ + (1/27x³) = N 3 -3N = 9 3- 3 x  9 = 729 - 27 = 702 ` `

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