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Math Help - Help with adding rational expressions with unlike denominators

  1. #1
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    Help with adding rational expressions with unlike denominators

    Hi! I'm new here! My name is Christina and I am currently in Algebra 2 in ninth grade.
    The problem that I need help with is 2-a^2/a^2+a plus 3a+4/3a+3
    I got 6+4a/3a(a+1) but I'm not sure if it's right.
    Thanks!
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  2. #2
    MHF Contributor MarkFL's Avatar
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    Re: Help with adding rational expressions with unlike denominators

    You result is correct. Good work!

    Two things that will help you get better help:

    1.) Post in the appropriate area. This forum is for things like abstract algebra, Galois theory, groups, rings, homomorphisms, etc. While I can certainly appreciate that any math may feel advanced while it is being learned, this isn't what is meant by advanced algebra here. I also see folks posting problems they feel are "complex" in the complex analysis forums. It is a common mistake, and I only tell you this as a means for you to get better help.

    2.) Use bracketing symbols to clearly indicate the problem. For example, it would be more clear had you typed:

    (2 - a^2)/(a^2 + a) + (3a + 4)/(3a + 3)

    and for really nice formatting, look into using \LaTeX and you can display it as:

    \frac{2-a^2}{a^2+a}+\frac{3a+4}{3a+3}
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  3. #3
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    Re: Help with adding rational expressions with unlike denominators

    Thanks so much!! Yep, it will take a while to get used to this site. I will definitely look into using that! Thanks for your help!
    (:
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