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math problem

posted by on .

having problem with this please help

∛3x+5+7=3

  • math problem - ,

    I have a feeling there should be brackets somewhere
    the way it stands .... assuming ∛(3x)

    ∛(3x) = 3 - 5 - 7
    ∛(3x) = -9
    3x = -729
    x = -243

    If I take it just the way you typed it
    ∛3x + 5 + 7 = 3
    ∛3x = -9
    x = -9/∛3 = appr -6.24

    PLease let me know where the brackets should be

  • math problem - ,

    I believe it's
    ∛(3x+5)+7=3

    there is NO solution for this question.
    Cheers!
    da.guy1[at]yah oo

  • math problem - ,

    Of course there's a solution.

    ∛(3x+5)+7=3
    ∛(3x+5) = -4
    3x+5 = (-4)^3 = -64
    3x = -69
    x = -23

    Check:
    ∛(-69+5)+7 = ∛-64 + 7 = -4+7 = 3

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