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so i am in precalculus, we need to graph the fuction using derivatives, maxima, intercepts and concavity. I am having trouble factoring cubics: for example: x^4-4x^3+16x --> x(x^3-4x^2+16)Now what? That is without calculator, how do you find the roots?

  • math -

    The equation x^3-4x^2+16=0 has 1 real root
    x=-1.68 (approx)



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