Question

V(v5+2)^2+V(2-v5)^2-V(v5-3)^2

Answer 1

$\sqrt{(\sqrt{5}+2)^2}+\sqrt{(2-\sqrt{5})^2}-\sqrt{(\sqrt{5}-3)^2}=\\ \\=|\sqrt{5}+2|+|2- \sqrt{5}|-| \sqrt{5}-3|=\\ \\=\sqrt{5}+2-(2-\sqrt{5})+(\sqrt{5}-3)=\\ \\=\sqrt{5}+2-2+\sqrt{5}+\sqrt{5}-3=3\sqrt{5}-3\\ \\ \\ \\ OBS: \ \sqrt{5}=aprox \ 2,23$