0}} \right. " alt="1)\; \left \{ {{x^2-x<0} \atop {-(x^2-x)<2}} \right. \; \left \{ {{x(x-1)<0} \atop {x^2-x+2>0}} \right. " align="absmiddle" class="latex-formula">
0}} \right. \; \left \{ {{x\in (-2-\sqrt5,-2+\sqrt5)} \atop {x\in (-\infty,-2-\sqrt3)U(-2+\sqrt3,+\infty)}} \right. \; \to \\\\ x\in (-2-\sqrt5,-2-\sqrt3)U(-2+\sqrt3,-2+\sqrt5)" alt="\left \{ {{x^2+4x-1<0} \atop {x^2+4x+1>0}} \right. \; \left \{ {{x\in (-2-\sqrt5,-2+\sqrt5)} \atop {x\in (-\infty,-2-\sqrt3)U(-2+\sqrt3,+\infty)}} \right. \; \to \\\\ x\in (-2-\sqrt5,-2-\sqrt3)U(-2+\sqrt3,-2+\sqrt5)" align="absmiddle" class="latex-formula">
