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college algebra

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A partial solution set is given for the polynomial equation. Find the complete solution set. (Enter your answers as a comma-separated list.)
x^3 + 3x^2 − 14x − 20 = 0; {−5}

  • college algebra - ,

    x^3 + 3x^2 − 14x − 20 = (x+5)(x^2-2x-4)

    Now just solve the quadratic for the other two values of x.

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