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Math Help - simple algebra

  1. #1
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    simple algebra

    I can't figure this out:

    0 = x^3 - 4x
    What is x?

    I could guess for x, but how do I solve this arithmetically?
    Thank you,
    Patrick
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  2. #2
    MHF Contributor
    skeeter's Avatar
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    try factoring the expression on the right side of the equation and using the zero product property to solve for x.
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  3. #3
    Super Member wingless's Avatar
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    0 = x^3-4x

    Factor an x,
    0 = (x)\cdot(x^2-4)

    Now, you can see that if one of these factors are zero, then the equation is satisfied.

    We're looking for cases where either x=0 or x^2-4=0.

    I think you can solve from here.
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  4. #4
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    Thank you guys. That really helped a lot ..
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