1. Решите неравенство \((\frac{1}{x^2-7x+12}+\frac{x-4}{3-x}) \sqrt{6x-x^2 } \leq 0.\)
2. Решите неравенство \(\sqrt{5-x} \textless \frac{\sqrt{x^3-7x^2+14x-5}}{\sqrt{x-1}}.\)
3. Решите неравенство \(\left ( x+\frac{3}{x} \right )\left ( \frac{\sqrt{x^2-6x+9}-1}{\sqrt{5-x}-1} \right )^2\geq 4\left ( \frac{\sqrt{x^2-6x+9}-1}{\sqrt{5-x}-1} \right )^2.\)
