\[x^{2} - 10x + 26 \geq 2|x - 5|\]
\[Если\ x \geq 5:\]
\[x^{2} - 10x + 26 - 2 \cdot (x - 5) \geq 0\]
\[x^{2} - 10x + 26 - 2x + 10 \geq 0\]
\[x^{2} - 12x + 36 \geq 0\]
\[(x - 6)^{2} \geq 0\]
\[x - любое\ число\]
\[\Longrightarrow (x - 6)^{2} = 0;\ \ \ x = 6.\]
\[Если\ x < 5:\]
\[x^{2} - 10x + 26 + 2 \cdot (x - 5) \geq 0\]
\[x^{2} - 10x + 26 + 2x - 10 \geq 0\]
\[x^{2} - 8x + 16 \geq 0\]
\[(x - 4)^{2} \geq 0\]
\[x - любое\ число\]
\[\Longrightarrow (x - 4)^{2} = 0;\ \ \ x = 4.\]
\[Ответ:\ x = 6;x = 4.\]