( 𝑥 − 3 ) ( 𝑥 − 6 ) < 0 ${\displaystyle \left(x-3\right)\left(x-6\right)<0}$

( 𝑥 − 6 ) 2 𝑥 − 3 > 0 ${\displaystyle \frac{{\left(x-6\right)}^2}{x-3}>0}$

𝑥 − 3 𝑥 − 6 > 0 ${\displaystyle \frac{x-3}{x-6}>0}$

( 𝑥 − 3 ) 2 ( 𝑥 − 6 ) < 0 ${\displaystyle {\left(x-3\right)}^2\left(x-6\right)<0}$

3 < 𝑥 < 6 ${\displaystyle 3<x<6}$

𝑥 < 3 ${\displaystyle x<3}$ или 𝑥 > 6 ${\displaystyle x>6}$

3 < 𝑥 < 6 ${\displaystyle 3<x<6}$ или 𝑥 > 6 ${\displaystyle x>6}$

𝑥 < 3 ${\displaystyle x<3}$ или 3 < 𝑥 < 6 ${\displaystyle 3<x<6}$