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