Respuesta :

Note that if a + bi is a root of P(x) = 0, then a – bi is also a root of P(x) = 0.

18.

Given root:

[tex]\begin{gathered} 1+4i \\ \sqrt[]{3} \end{gathered}[/tex]

Additional roots:

[tex]\begin{gathered} 1-4i \\ -\sqrt[]{3} \end{gathered}[/tex]

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