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Homework Help: Factorisation question

  1. Nov 5, 2006 #1
    i know i totally sux so can anyone help me? thx

    factorise x^3 - 2x^2 - 5x + 6
     
  2. jcsd
  3. Nov 5, 2006 #2

    arildno

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    Find a zero for your expression.
     
  4. Nov 5, 2006 #3
    i am too retarded:rofl: , can u show me a step by step please
     
  5. Nov 5, 2006 #4
    Yep and you should start by "guessing a number" that is either (-1,1,2,-2,3,-3,6,-6). Why these numbers ? Well 6 can be divided by these numbers. Let's say that number is 6. Then perform an Euclidian devision in which you devide the given expression by (x - 6). What you get is an expression of second degree in x times (x-6) equals the given expression. This should get you started

    marlon
     
    Last edited: Nov 5, 2006
  6. Nov 5, 2006 #5

    arildno

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    Don't bother to help OP, marlon.
    In another thread, he has refused even to do a single thing on his own with the expression 18t^2-2.

    He is just after having his homework done for him.
     
  7. Nov 5, 2006 #6
    Opps did not know that. Thanks for the advice, besides enough info has been given.

    regards
    marlon
     
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