\[y = \sqrt{7x - x²} + \sqrt{6 - 5x}\]
\[1)\ 7x - x^{2} \geq 0\]
\[x^{2} - 7x \leq 0\]
\[x(x - 7) \leq 0.\]
\[2)\ 6 - 5x \geq 0\]
\[5x - 6 \leq 0\]
\[x \leq \frac{6}{5}\]
\[x \leq 1,2.\]
\[Ответ:x \in \lbrack 0;1,2\rbrack.\]