Math

5x^4=5x
Can you please help

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asked by Kiki
  1. 5x^4=5x
    x^4 - x = 0
    x(x^3 - 1) = 0
    x = 0 or x^3 = 1
    x = 0 or x = 1

    There are also two complex roots, but I don't think you have studied that.
    Let me know if you did.

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    posted by Reiny
  2. Yes I have but how to you find them

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    posted by Kiki
  3. the above factor of x^3 - 1 factors to
    (x-1)(x^2 + x + 1)

    the x-1 = 0 gave us x = 1

    x^2 + x + 1 = 0
    x = (-1 ±√-3)/2
    or
    x = (-1 ± i√3)/2

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    posted by Reiny
  4. Thank you

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    posted by Kiki

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