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Question
$$2^3-5xx^2-x+3 = 0$$
Answer
This equation has no solution.
Explanation
$$ \begin{aligned} 2^3-5xx^2-x+3 &= 0&& \text{simplify left side} \\[1 em]2^3-5x^3-x+3 &= 0&& \\[1 em]8-5x^3-x+3 &= 0&& \\[1 em]-5x^3-x+11 &= 0&& \\[1 em] \end{aligned} $$
This polynomial has no rational roots that can be found using Rational Root Test.
Roots were found using qubic formulas.
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Equations Solver