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March 25, 2017

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use synthetic division to factor x^3-2x^2-9x+18

  • colllege algebra - ,

    if you know how to do synthetic division, it should be easy to show that

    x^3-2x^2-9x+18 = (x+3)(x-2)(x-3)

    you know that all the roots have to be factors of 18.

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