Find roots of polynomial $$ p(x) = -x^2+5x-10 $$
Answer
The roots of polynomial $ p(x) $ are:
$$ \begin{aligned}x_1 &= \frac{ 5 }{ 2 }+\frac{\sqrt{ 15 }}{ 2 }i\\[1 em]x_2 &= \frac{ 5 }{ 2 }- \frac{\sqrt{ 15 }}{ 2 }i \end{aligned} $$Explanation
The solutions of $ -x^2+5x-10 = 0 $ are: $ x = \dfrac{ 5 }{ 2 }+\dfrac{\sqrt{ 15 }}{ 2 }i ~ \text{and} ~ x = \dfrac{ 5 }{ 2 }-\dfrac{\sqrt{ 15 }}{ 2 }i$.
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