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Math

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x^4-4x^3+3x^2+8x-16

Find the zeroes given one is x^2-x-4.

I don't know what to do now. i tried synthetic division. pls help : D

  • Math - ,

    synthetic division only work for linear factors.

    Long division yields

    x^4-4x^3+3x^2+8x-16 = (x^2-x-4)(x^2-3x+4)

    finding the zeros now is easy.
    Right?

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