$$-x^3+49x^2-140x+100 = 0$$
Answer
$$ \begin{matrix}x_1 = 1.23299 & x_2 = 1.76298 & x_3 = 46.00404 \end{matrix} $$
Explanation
This polynomial has no rational roots that can be found using Rational Root Test.
Roots were found using qubic formulas.
This page was created using
Polynomial Equations Solver