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Math Help - Factorise

  1. #1
    Junior Member Mist's Avatar
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    Factorise

    Factorise completely
    x^3-16x
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  2. #2
    MHF Contributor
    Grandad's Avatar
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    Hello Mist
    Quote Originally Posted by Mist View Post
    Factorise completely
    x^3-16x
    Take out a common factor, x, and then use 'difference of two squares' on what's left in the bracket; i.e. a^2 - b^2 = (a+b)(a-b).

    Can you do it now?

    Grandad
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