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Homework Help: Simplify Fraction

  1. Apr 11, 2007 #1
    1. The problem statement, all variables and given/known data

    Simplify fully the following equation

    2. Relevant equations

    [tex]\frac{4x^{2}-6x}{4x^{2}-9}[/tex]


    3. The attempt at a solution

    the 4x² cancel each other out and 3 goes into 6 and 9
    so the answer is
    [tex]\frac{-2x}{-3}[/tex]

    but that seems to easy for the penultinate question on a higher GCSE paper.
     
    Last edited: Apr 11, 2007
  2. jcsd
  3. Apr 11, 2007 #2

    hage567

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    Sorry, but where are you getting the 4x^2 from?
     
  4. Apr 11, 2007 #3
    Sorry, I missed it out in the equatio above... ive edited it in now

    Thanks
     
  5. Apr 11, 2007 #4

    hage567

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    You can't cancel out the 4x^2 like that! That's an illegal move.
     
    Last edited: Apr 11, 2007
  6. Apr 11, 2007 #5

    malawi_glenn

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    You can only cancel out factors! never terms!!

    attachment.php?attachmentid=9743&stc=1&d=1176312106.jpg
     

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