Question
$$-\frac{1}{2}x^2+18 = 0$$
Answer
$$ \begin{matrix}x_1 = 6 & x_2 = -6 \\[1 em] \end{matrix} $$
Explanation
$$ \begin{aligned} -\frac{1}{2}x^2+18 &= 0&& \text{multiply ALL terms by } \color{blue}{ 2 }. \\[1 em]-2 \cdot \frac{1}{2}x^2+2\cdot18 &= 2\cdot0&& \text{cancel out the denominators} \\[1 em]-x^2+36 &= 0&& \\[1 em] \end{aligned} $$
$ -x^{2}+36 = 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