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Thread: Distribution Confusion

  1. #1
    Junior Member
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    Distribution Confusion

    Having a difficult time simplifying the following expression:

    -y2 / (1+y)2

    -----> -
    y2 / (1+2y+y2 )

    ---->y2 * (1+2y+y2)-1 [how would I distribute across the parenthesis considering the -1 exponent?]


    Any pointers would be appreciated.
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  2. #2
    MHF Contributor
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    Re: Distribution Confusion

    Hey thebighumungous.

    You will have to leave it in the form you have it unless you want to represent that in something like a Taylor series form.

    If you want the simplest fraction though, what you have in the second line is good enough.

    One possibility is adding 1 and removing one and using the fact that 1 - y^2 = (1+y)(1-y) which will give a cancellation in one term - 1/(1+y)^2.
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  3. #3
    MHF Contributor

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    Re: Distribution Confusion

    You have lost the leading negative in you last line.
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