The root of polynomial $ p(x) $ is:
$$ \begin{aligned}x &= -\frac{ 8118 }{ 85 } \end{aligned} $$Step 1:
Combine like terms:
$$ 178596+ \color{blue}{1867x} + \color{blue}{3x} = \color{blue}{1870x} +178596 $$Step 2:
$$ \begin{aligned} 1870x+178596 & = 0 \\[1 em] 1870 \cdot x & = -178596 \\[1 em] x & = - \frac{ 178596 }{ 1870 } \\[1 em] x & = - \frac{ 178596 : 22 }{ 1870 : 22} \\[1 em] x & = -\frac{ 8118 }{ 85 } \end{aligned} $$