Question
Find roots of polynomial $$ p(x) = 2x-4 $$
Answer
The root of polynomial $ p(x) $ is:
$$ \begin{aligned}x &= 2 \end{aligned} $$Explanation
$$ \begin{aligned} 2x-4 & = 0 \\[1 em]
2 \cdot x & = 4 \\[1 em]
x & = \frac{ 4 }{ 2 } \\[1 em]
x & = \frac{ 4 : 2 }{ 2 : 2} \\[1 em]
x & = 2
\end{aligned} $$
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