Question
$$-3+x+2x^2+4x^3+8x^4 = 0$$
Answer
This equation has no solution.
Explanation
$$ \begin{aligned} -3+x+2x^2+4x^3+8x^4 &= 0&& \text{simplify left side} \\[1 em]8x^4+4x^3+2x^2+x-3 &= 0&& \\[1 em] \end{aligned} $$
This polynomial has no rational roots that can be found using Rational Root Test.
Roots were found using quartic formulas
This page was created using
Polynomial Equations Solver