$\left(-\infty,2\right)\cup\left(2,+\infty\right)$\left(-\infty,2\right)\cup\left(2,+\infty\right)

$\displaystyle \left(-\infty, \frac{ 3}{2} \right)\cup\left( \frac{3}{2} ,+\infty\right)$\displaystyle \left(-\infty, \frac{ 3}{2} \right)\cup\left( \frac{3}{2} ,+\infty\right)

$\left(-\infty,1\right)\cup\left(1,5\right)\cup\left(5,+\infty\right)$\left(-\infty,1\right)\cup\left(1,5\right)\cup\left(5,+\infty\right)

$\left(-\infty,-2\right)\cup\left(-2,+\infty\right)$\left(-\infty,-2\right)\cup\left(-2,+\infty\right)