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    nino86's Avatar
    nino86 Posts: 1, Reputation: 1
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    #1

    Oct 30, 2011, 12:25 PM
    finding the zeros of a polynomial function
    what are the zeros of x^4-4x^2
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #2

    Oct 31, 2011, 12:18 AM
    Well, first of all, you can factorise x^2 like this:



    Then, can further factorise this using the difference of two squares.

    From there, can you find the zeroes? :)
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