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Math Help - How do I find the sum of polynomials?

  1. #1
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    How do I find the sum of polynomials?

    (11m^2-2mn+8n^2)+(8m^2+4mn-2n^2)
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  2. #2
    Member rtblue's Avatar
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    ok. The original problem:

    11m^2-2mn+8n^2+8m^2+4mn-2n^2

    now, you are to combine like terms. This means to combine the terms that have the same variables being multiplied to each other. Look at 11m^2 you will combine this with 8m^2 because they both have everything exactly the same, except for the coefficient(the number). so, you will get 19m^2, and you do this for the whole problem to get:

    19m^2+2mn+6n^2

    YAY

    Once again, you are adding and subtracting the numbers that have the same variable ending, simply put.
    Last edited by rtblue; March 25th 2009 at 05:39 PM.
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  3. #3
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    Quote Originally Posted by avshockey View Post
    (11m^2-2mn+8n^2)+(8m^2+4mn-2n^2)
    Many students find it helpful to add polynomials vertically:

    [html]11m^2 - 2mn + 8n^2
    8m^2 + 4mn - 2n^2
    ------------------
    19m^2 + 2mn + 6n^2[/html]

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