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Precalculus

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I'm HOPING this is the last problem I need help on.. :-/

List the possible rational zeros of f using the rational zero theorem.

f(x) = 2x^3 - x^2 + 5x + 6

I applied the rational zero theorem, but none of the factors worked :(

  • Precalculus -

    You are right, it does not factor over the rational numbers.
    Try this program

    http://www.1728.com/cubic.htm

    it shows one real solution, and two imaginary roots.

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