Question
Find roots of polynomial $$ p(x) = 5x+10 $$
Answer
The root of polynomial $ p(x) $ is:
$$ \begin{aligned}x &= -2 \end{aligned} $$Explanation
$$ \begin{aligned} 5x+10 & = 0 \\[1 em]
5 \cdot x & = -10 \\[1 em]
x & = - \frac{ 10 }{ 5 } \\[1 em]
x & = - \frac{ 10 : 5 }{ 5 : 5} \\[1 em]
x & = -2
\end{aligned} $$
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