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Math Help - Dividing algebraic expressions

  1. #1
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    Dividing algebraic expressions

    x^3 - 22x + 15 \ x+ 5

    When I do this normally it works out but for this one I end up with trying to subtract 5x^2 from 22x.

    I get the same type of problem with 2x^3 - x^2 - 12 / x - 2
    Do I have to do it a different way than long divison?
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  2. #2
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    Quote Originally Posted by zyx.gar View Post
    x^3 - 22x + 15 \ x+ 5

    When I do this normally it works out but for this one I end up with trying to subtract 5x^2 from 22x.

    I get the same type of problem with 2x^3 - x^2 - 12 / x - 2
    Do I have to do it a different way than long divison?
    you need a place holder ...

    Code:
    .....-----------------------
    x+5 | 2x^3 - x^2 + 0x - 12
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