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Math Help - number of real roots, give an argument

  1. #1
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    number of real roots, give an argument

    Could someone help me with this problem, I have no idea how to start with it


    How many real roots does this polynomial have p(x)=x^4-x^3-1?
    Clearly state the argument that explains the number of real roots.


    Thank you for any help
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  2. #2
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    Re: number of real roots, give an argument

    What are the coordinates of the stationary points.
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  3. #3
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    Re: number of real roots, give an argument

    x=0 and x=3/4
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    Re: number of real roots, give an argument

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