5\end{array}\right\; \; \left\{\begin{array}{l}-12,5\end{array}\right\; \; x\in \varnothing \\\\\\2)\; \; \left\{\begin{array}{l}4+3x-x^2>0\\2-x>0\end{array}\right\; \; \left\{\begin{array}{l}x^2-3x-4<0\\2>x\end{array}\right\; \; \left\{\begin{array}{l}(x-4)(x+1)<0\\x<2\end{array}\right\\\\\\\left\{\begin{array}{l}-1<x<4\\x<2\end{array}\right\; \; \Rightarrow \; \; \; x\in (-1\, ;\, 2)" alt="1)\; \; \left\{\begin{array}{l}x^2-x-2<0\\5-2x<0\end{array}\right\; \; \left\{\begin{array}{l}(x-2)(x+1)<0\\2x>5\end{array}\right\; \; \left\{\begin{array}{l}-12,5\end{array}\right\; \; x\in \varnothing \\\\\\2)\; \; \left\{\begin{array}{l}4+3x-x^2>0\\2-x>0\end{array}\right\; \; \left\{\begin{array}{l}x^2-3x-4<0\\2>x\end{array}\right\; \; \left\{\begin{array}{l}(x-4)(x+1)<0\\x<2\end{array}\right\\\\\\\left\{\begin{array}{l}-1<x<4\\x<2\end{array}\right\; \; \Rightarrow \; \; \; x\in (-1\, ;\, 2)" align="absmiddle" class="latex-formula">
0\\4x\leq 3\end{array}\right\; \; \left\{\begin{array}{l}(x-2)(x-4)>0\\x\leq 0,75\end{array}\right\\\\\\\left\{\begin{array}{l}x\in (-\infty ;2)\cup (4;+\infty )\\x\in (-\infty \, ;\; 0,75\; ]\end{array}\right\; \; \Rightarrow \quad x\in (-\infty \, ;\, 0,75\; ]" alt="4)\; \; \left\{\begin{array}{l}-x^2+6x-8<0\\4x-3\leq 0\end{array}\right\; \; \left\{\begin{array}{l}x^2-6x+8>0\\4x\leq 3\end{array}\right\; \; \left\{\begin{array}{l}(x-2)(x-4)>0\\x\leq 0,75\end{array}\right\\\\\\\left\{\begin{array}{l}x\in (-\infty ;2)\cup (4;+\infty )\\x\in (-\infty \, ;\; 0,75\; ]\end{array}\right\; \; \Rightarrow \quad x\in (-\infty \, ;\, 0,75\; ]" align="absmiddle" class="latex-formula">