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Math Help - binomials

  1. #1
    Newbie
    Joined
    Oct 2008
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    13

    binomials

    (x+y)^2-(9xy-6x^2)=


    how do you work this problem?
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  2. #2
    Senior Member
    Joined
    Dec 2007
    From
    Melbourne
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    428
    Expand the brackets and collect like terms. If you cannot remember the formula for (x+y)^2 then multiply out (x+y)(x+y).
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  3. #3
    Newbie
    Joined
    Oct 2008
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    More help

    Okay so I get x^2 + xy + yx +y^2 is this right and what can I do with the second set of terms?
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