Question
$$(3x-1)(x+7) = 0$$
Answer
$$ \begin{matrix}x_1 = \dfrac{ 1 }{ 3 } & x_2 = -7 \\[1 em] \end{matrix} $$
Explanation
$$ \begin{aligned} (3x-1)(x+7) &= 0&& \text{simplify left side} \\[1 em]3x^2+21x-x-7 &= 0&& \\[1 em]3x^2+20x-7 &= 0&& \\[1 em] \end{aligned} $$
$ 3x^{2}+20x-7 = 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