Find roots of polynomial $$ p(x) = 8+4x+2x $$

The root of polynomial $ p(x) $ is:

$$ \begin{aligned}x &= -\frac{ 4 }{ 3 } \end{aligned} $$

Step 1:

Combine like terms:

$$ 8+ \color{blue}{4x} + \color{blue}{2x} = \color{blue}{6x} +8 $$

Step 2:

$$ \begin{aligned} 6x+8 & = 0 \\[1 em] 6 \cdot x & = -8 \\[1 em] x & = - \frac{ 8 }{ 6 } \\[1 em] x & = - \frac{ 8 : 2 }{ 6 : 2} \\[1 em] x & = -\frac{ 4 }{ 3 } \end{aligned} $$

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