5x(x - 1) - (1 - x) = 0
5x(x - 1) + (x - 1) = 0
(x - 1)(5x + 1) = 0
\(\left[\begin{matrix}x-1=0\\5x+1=0\end{matrix}\right.\)
\(\left[\begin{matrix}x=1\\x=-\frac{1}{5}\end{matrix}\right.\)
(x - 3)2 - (2x + 3)2 = 0
(x - 3 - 2x - 3)(x - 3 + 2x + 3) = 0
3x(- 6 - x) = 0
\(\left[\begin{matrix}x=0\\x=-6\end{matrix}\right.\)