Question
$$8x^2+30 = 4$$
Answer
$$ \begin{matrix}x_1 = \dfrac{\sqrt{ 13 }}{ 2 } i & x_2 = - \dfrac{\sqrt{ 13 }}{ 2 } i \\[1 em] \end{matrix} $$
Explanation
$$ \begin{aligned} 8x^2+30 &= 4&& \text{move all terms to the left hand side } \\[1 em]8x^2+30-4 &= 0&& \text{simplify left side} \\[1 em]8x^2+26 &= 0&& \\[1 em] \end{aligned} $$
$ 8x^{2}+26 = 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.
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