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21 August, 04:27

The polynomial equation x^3+x^2=-9x-9 has complex roots + / - 3i What is the other root? Use a graphing calculator and a system of equations.

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  1. 21 August, 06:06
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    For this case what you can do is factorize the polynomial equation, which would be left like follows

    x ^ 3 + x ^ 2 + 9x + 9 = 0

    (x + 1) (x ^ 2 + 9) = 0

    Resolving, we have that the missing root is

    x = - 1

    Answer

    x=-1
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