Find roots of polynomial $$ p(x) = x^4+2x^3+5x^2+8x+10 $$
Answer
The roots of polynomial $ p(x) $ are:
$$ \begin{aligned}x_1 &= 0.2758+1.9081i\\[1 em]x_2 &= 0.2758-1.9081i\\[1 em]x_3 &= -1.2758+1.0309i\\[1 em]x_4 &= -1.2758-1.0309i \end{aligned} $$Explanation
Polynomial $ x^4+2x^3+5x^2+8x+10 $ has no rational roots that can be found using Rational Root Test, so the roots were found using quartic formulas.
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