Find roots of polynomial $$ p(x) = -4x^3+6x+112 $$
Answer
The roots of polynomial $ p(x) $ are:
$$ \begin{aligned}x_1 &= 3.2011\\[1 em]x_2 &= -1.6006+2.487i\\[1 em]x_3 &= -1.6006-2.487i \end{aligned} $$Explanation
Polynomial $ -4x^3+6x+112 $ has no rational roots that can be found using Rational Root Test, so the roots were found using qubic formulas.
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