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Math Help - just checking an answer

  1. #1
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    just checking an answer

    this is a pretty basic question but it didnt have the answer in the back of the book and i want to make sure i got it correct

    Preform the operations indicated: (addition of polynomials)

    (2x^2 + 12xy -11) + (6x^2 - 2x + 4) + (-x^2 - y - 2)
    = (8x^2 + 12xy - 2x - 7) + (-x^2 - y - 2)
    = 7x^2 + 12 xy - 2x - y - 9

    is that correct? because you can make the origional line:
    (2x^2 + 12xy + 0y + 0x -11) +
    (6x^2 + 0xy + 0y - 2x + 4) +
    (-x^2 + 0xy - y + 0x - 2)
    ??
    thanks for the help
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  2. #2
    is up to his old tricks again! Jhevon's Avatar
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    New York, USA
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    Quote Originally Posted by jpginc View Post
    this is a pretty basic question but it didnt have the answer in the back of the book and i want to make sure i got it correct

    Preform the operations indicated: (addition of polynomials)

    (2x^2 + 12xy -11) + (6x^2 - 2x + 4) + (-x^2 - y - 2)
    = (8x^2 + 12xy - 2x - 7) + (-x^2 - y - 2)
    = 7x^2 + 12 xy - 2x - y - 9

    is that correct? because you can make the origional line:
    (2x^2 + 12xy + 0y + 0x -11) +
    (6x^2 + 0xy + 0y - 2x + 4) +
    (-x^2 + 0xy - y + 0x - 2)
    ??
    thanks for the help
    it's correct. good job
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  3. #3
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    thanks
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