0,\\\\(x-2)(x-3)>0\\\\x\in (-\infty,2)U(3,+\infty)\\\\2)\; \left \{ {{x^2-25 \geq 0} \atop {9-x>0}} \right. \; ,\; \left \{ {{(x-5)(x+5) \geq 0} \atop {x<9}} \right. \; ,\; \left \{ {{x\in (-\infty,-5]U[5,+\infty)} \atop {x\in (-\infty,9)}} \right. \\\\Otvet:\; x\in (-\infty,-5]U[5,9)" alt="1)\; y=\frac{x-2}{\sqrt{x^2-5x+6}}\\\\ODZ:\; x^2-5x+6>0,\\\\(x-2)(x-3)>0\\\\x\in (-\infty,2)U(3,+\infty)\\\\2)\; \left \{ {{x^2-25 \geq 0} \atop {9-x>0}} \right. \; ,\; \left \{ {{(x-5)(x+5) \geq 0} \atop {x<9}} \right. \; ,\; \left \{ {{x\in (-\infty,-5]U[5,+\infty)} \atop {x\in (-\infty,9)}} \right. \\\\Otvet:\; x\in (-\infty,-5]U[5,9)" align="absmiddle" class="latex-formula">