Question
$$x^2+6x-2 = 7x+10$$
Answer
$$ \begin{matrix}x_1 = -3 & x_2 = 4 \\[1 em] \end{matrix} $$
Explanation
$$ \begin{aligned} x^2+6x-2 &= 7x+10&& \text{move all terms to the left hand side } \\[1 em]x^2+6x-2-7x-10 &= 0&& \text{simplify left side} \\[1 em]x^2-x-12 &= 0&& \\[1 em] \end{aligned} $$
$ x^{2}-x-12 = 0 $ is a quadratic equation.
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