2\; \Rightarrow \; \; (\sqrt5-2)>0\; \; \Rightarrow\; \; |\sqrt5-2|=\sqrt5-2\; \; \star \\\\\\|\sqrt5-2,5|+|\sqrt5-2|=2,5-\sqrt5+\sqrt5-2=2,5-2=0,5 " alt=" |\sqrt5-2,5|+|\sqrt5-2|=?\\\\\star \; \; \sqrt5\approx 2,236\\\\\sqrt5<2,5\; \; \Rightarrow \; \; (\sqrt5-2,5)<0\; \; \Rightarrow \; \; |\sqrt5-2,5|=2,5-\sqrt5\\\\\sqrt5>2\; \Rightarrow \; \; (\sqrt5-2)>0\; \; \Rightarrow\; \; |\sqrt5-2|=\sqrt5-2\; \; \star \\\\\\|\sqrt5-2,5|+|\sqrt5-2|=2,5-\sqrt5+\sqrt5-2=2,5-2=0,5 " align="absmiddle" class="latex-formula">