Question
Find roots of polynomial $$ p(x) = -2x^2+16x+165 $$
Answer
The roots of polynomial $ p(x) $ are:
$$ \begin{aligned}x_1 &= 13.9247\\[1 em]x_2 &= -5.9247 \end{aligned} $$Explanation
The solutions of $ -2x^2+16x+165 = 0 $ are: $ x = 4-\dfrac{\sqrt{ 394 }}{ 2 } ~ \text{and} ~ x = 4+\dfrac{\sqrt{ 394 }}{ 2 }$.
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