Find roots of polynomial $$ p(x) = 4x^4+13x^3+28x^2+27x+18 $$
Answer
The roots of polynomial $ p(x) $ are:
$$ \begin{aligned}x_1 &= -0.625+1.0533i\\[1 em]x_2 &= -0.625-1.0533i\\[1 em]x_3 &= -1+1.4142i\\[1 em]x_4 &= -1-1.4142i \end{aligned} $$Explanation
Polynomial $ 4x^4+13x^3+28x^2+27x+18 $ has no rational roots that can be found using Rational Root Test, so the roots were found using quartic formulas.
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