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Math Help - Factorise the following as fully as possible:

  1. #1
    Member Mr Rayon's Avatar
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    Wink Factorise the following as fully as possible:

    3x^3 - 6x^2 - 24x
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  2. #2
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    Quote Originally Posted by Mr Rayon View Post
    3x^3 - 6x^2 - 24x
    Start by taking 3x out as a common factor.
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  3. #3
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    Quote Originally Posted by Mr Rayon View Post
    3x^3 - 6x^2 - 24x
    3x^3 - 6x^2 - 24x = 3x (x^2 - 2x - 8) = 3x (x-4) (x+2)

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  4. #4
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    Quote Originally Posted by Mr Rayon View Post
    3x^3 - 6x^2 - 24x
    This one works just like the factorization of your other cubic post: Locate the common factor and take it out front; then factor the remaining quadratic to obtain the result you've been given in an earlier reply in this thread.



    Also posted here
    Last edited by stapel; April 11th 2009 at 06:32 AM. Reason: Providing link to another thread of interest.
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  5. #5
    Member Mr Rayon's Avatar
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    Quote Originally Posted by stapel View Post
    Also posted here
    Never thought anyone would find out.
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