$$(x+2)(x-1)-2x = 0$$
Answer
$$ \begin{matrix}x_1 = -1 & x_2 = 2 \\[1 em] \end{matrix} $$
Explanation
$$ \begin{aligned} (x+2)(x-1)-2x &= 0&& \text{simplify left side} \\[1 em]x^2-x+2x-2-2x &= 0&& \\[1 em]x^2-x+2x-2-2x &= 0&& \\[1 em]x^2-x-2 &= 0&& \\[1 em] \end{aligned} $$
$ x^{2}-x-2 = 0 $ is a quadratic equation.
You can use step-by-step quadratic equation solver to see a detailed explanation on how to solve this equation.
This page was created using
Equations Solver