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Homework Help: Easy Algebra Question

  1. Oct 15, 2004 #1
    Question:
    1
    _________
    x + 1 - x + 1
    _______
    1
    ____
    x+1

    Here's where I'm stuck:

    x + 1 * x+1
    ____
    1

    = x^2 + 2x + 1

    (x + 1) - (x^2 + 2x + 1)

    How are you supposed to deal with the x + 1 - x + 1
    Thanks?
     
    Last edited: Oct 15, 2004
  2. jcsd
  3. Oct 15, 2004 #2
    What are you trying to get at here?, are you trying to find a derivative using the first principles?
     
  4. Oct 15, 2004 #3
    The question is supposed to be simplified as a fraction in lowest terms - or not a fraction if that is the case. I don't know what your refering to I'm afraid, my math rhetoric is fairly limited.
     
  5. Oct 15, 2004 #4
    well, okay, is it x+1-x+1 OR (x+1)-(x+1), because if it has brackets then it would equal 0, but if it has no brackets then it would simplify to 2.
     
  6. Oct 15, 2004 #5

    jcsd

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    Gold Member

    I'm not sure excatly what you're trying to do but surely x + 1 - x + 1 = 2

    simulpost :blushing:
     
    Last edited: Oct 15, 2004
  7. Oct 15, 2004 #6
    The lines represent fractions or division. The x + 1 is being (-) subtracted by a fraction, which is connected to a bunch of other fractions. I how to get common denominators however once.

    --- does not equal division or anything --- was used for moving #'s over.

    ------- 1
    -------___
    x + 1 - x+1
    ------- ___
    ------- 1
    ------- ___
    ------- x+1

    I'm not sure what to do from there.
     
    Last edited: Oct 15, 2004
  8. Oct 15, 2004 #7

    jcsd

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    Science Advisor
    Gold Member

    You'll have to be clearer, but surely 1/(x+1)/1/(x+1) = 1
     
  9. Oct 15, 2004 #8
    I've got it now, thanks. The result of all the fractions is done first, then subtracted from x + 1, which gives you x, which results in the correct answer as marked on the sheet.

    Thanks again.
     
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