Ta có :
\(\left(x-2\right)\left(x+\frac{2}{3}\right)>0.\)
TH1 :
\(\orbr{\begin{cases}x-2>0\\x+\frac{2}{3}>0\end{cases}}\)\(\Rightarrow\orbr{\begin{cases}x>2\\x>\left(-\frac{2}{3}\right)\end{cases}}\)
\(\Rightarrow x>2\)
TH2 :
\(\orbr{\begin{cases}x-2< 0\\x+\frac{2}{3}< 0\end{cases}}\)\(\Rightarrow\orbr{\begin{cases}x< 2\\x< -\frac{2}{3}\end{cases}}\)
\(\Rightarrow x< -\frac{2}{3}\)
=> x > 2 hoặc x < -2/3 (tmđk)