[tex]\sqrt{(\sqrt{5}+2)^2}+\sqrt{(2-\sqrt{5})^2}-\sqrt{(\sqrt{5}-3)^2}=\\ \\=|\sqrt{5}+2|+|2- \sqrt{5}|-| \sqrt{5}-3|=\\ \\=\sqrt{5}+2-(2-\sqrt{5})+(\sqrt{5}-3)=\\ \\=\sqrt{5}+2-2+\sqrt{5}+\sqrt{5}-3=3\sqrt{5}-3\\ \\ \\ \\ OBS: \ \sqrt{5}=aprox \ 2,23[/tex]
