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Homework Help: Xsquared - 11x - 42

  1. Oct 3, 2004 #1
    please please please please help!! really easy question but i'm stuck!

    I am sooooo stuck on this question in my maths homework! I know it's a really easy one probably but I can't seem to do it! It's about factorising,
    I don't know where the squared key on the p.c. is so im going to put squared after the x to represent x squared

    xsquared - 11x - 42

    I know because of the x squared it has to be two sets of brackets each with x in the front and it has to be two numbers that add to make -11 and times to make -42 I THINK

    please please please please please please please please please please help me!
     
  2. jcsd
  3. Oct 3, 2004 #2

    arildno

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    Welcome to PF!
    1. Cool down a bit, and answer first:
    What do you need to know in order to factorize a polynomial?
     
  4. Oct 3, 2004 #3
    ??? i'm only in year 9! but im going to delete this thread cos my dad just saved me! phew! :blushing:
     
  5. Oct 3, 2004 #4

    arildno

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    That was nice of him!
     
  6. Oct 3, 2004 #5
    yeah, sorry for wasting your time
     
  7. Oct 3, 2004 #6

    arildno

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    No problem!
    You might compare my answer with your Dad's:
    [tex]x^{2}-11x-42=(x-14)(x+3)[/tex]
     
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