Remove parentheses.
\[\begin{aligned}&fx=3x-2\\&Px=3{x}^{3}+{x}^{2}-20x+12\end{aligned}\]
Break down the problem into these 2 equations.
\[fx=3x-2\]
\[fx=Px\]
Solve the 1st equation: \(fx=3x-2\).
Subtract \(3x\) from both sides.
\[fx-3x=-2\]
Factor out the common term \(x\).
\[x(f-3)=-2\]
Divide both sides by \(f-3\).
\[x=-\frac{2}{f-3}\]
\[x=-\frac{2}{f-3}\]
Solve the 2nd equation: \(fx=Px\).
Move all terms to one side.
\[fx-Px=0\]
Factor out the common term \(x\).
\[x(f-P)=0\]
Divide both sides by \(f-P\).
\[x=0\]
\[x=0\]
Collect all solutions.
\[x=-\frac{2}{f-3},0\]
x=-2/(f-3),0
