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Please explain how to work this out? watch

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    3/x((x+1)^2)-x^2-1)
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    What are you trying to do to it?
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    (Original post by Mr M)
    What are you trying to do to it?
    sorry, it just says simplify?
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    Well have you expanded the brackets and simplified that part?
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    (Original post by Mr M)
    Well have you expanded the brackets and simplified that part?
    I don't understand how to times 3/x by (x+1)
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    (Original post by BuuTuu)
    I don't understand how to times 3/x by (x+1)
    Where did you get (x+1) from?

    Can you expand (x+1)^2 ?
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    sorry, I misread the Q, yeah--x^2+2x+1
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    (Original post by BuuTuu)
    sorry, I misread the Q, yeah--x^2+2x+1
    So what is (x+1)^2 - x^2 - 1 ?
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    2x
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    (Original post by BuuTuu)
    2x
    So what is \frac{3}{x} ((x+1)^2 - x^2 - 1) ?
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    (Original post by BuuTuu)
    so x^2=3/2..
    Noooo .... is the big bracket on the bottom of the fraction?
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    3/x*2x...I have no idea..
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    (Original post by BuuTuu)
    3/x*2x...I have no idea..
    That sounds better but could you confirm whether the big bracket is supposed to be on the top of the fraction or not?
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    (Original post by Mr M)
    Noooo .... is the big bracket on the bottom of the fraction?
    yh, sorry I got confused--I deleted that post or I thought I had, so it would be 3/x*2x?
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    (Original post by Mr M)
    That sounds better but could you confirm whether the big bracket is supposed to be on the top of the fraction or not?
    No, it isn't.
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    (Original post by BuuTuu)
    No, it isn't.
    Ok so the question is

    \frac{3}{x((x+1)^2-x^2-1)} ?

    If so, you now have \frac{3}{x (2x)} ... can you simplify the denominator?
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    3/2x^2?
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    (Original post by BuuTuu)
    3/2x^2?
    Yes so long as you mean 3/(2x^2).

    You really need to learn LaTeX or be more careful with brackets.
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    (Original post by Mr M)
    Yes so long as you mean 3/(2x^2).

    You really need to learn LaTeX or be more careful with brackets.
    kk, will do thank you
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    (Original post by BuuTuu)
    kk, will do thank you
    you are welcome
 
 
 
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