◀ back to index
Question
$$2(1-x)^3-5 = 0$$
Answer
This equation has no solution.
Explanation
$$ \begin{aligned} 2(1-x)^3-5 &= 0&& \text{simplify left side} \\[1 em]2(1-3x+3x^2-x^3)-5 &= 0&& \\[1 em]2-6x+6x^2-2x^3-5 &= 0&& \\[1 em]-2x^3+6x^2-6x-3 &= 0&& \\[1 em] \end{aligned} $$
This polynomial has no rational roots that can be found using Rational Root Test.
Roots were found using qubic formulas.
This page was created using
Equations Solver