\[x² - 10x + 16 \geq 0\]
\[x_{1} + x_{2} = 10,\ \ x_{1} = 2\]
\[x_{1} \cdot x_{2} = 16,\ \ x_{2} = 8\]
\[Ответ:( - \infty;2\rbrack \cup \lbrack 8; + \infty).\]