Find roots of polynomial $$ p(x) = -3x^2+12x+9 $$
Answer
The roots of polynomial $ p(x) $ are:
$$ \begin{aligned}x_1 &= 4.6458\\[1 em]x_2 &= -0.6458 \end{aligned} $$Explanation
The solutions of $ -3x^2+12x+9 = 0 $ are: $ x = 2-\sqrt{ 7 } ~ \text{and} ~ x = 2+\sqrt{ 7 }$.
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