\sqrt{(7-4\sqrt{3}})^2 + \sqrt{(5-4\sqrt{3}})^2 \\ = l7-4\sqrt{3}l + l5-4\sqrt{3}l \\ tak kak 4\sqrt{3} = \sqrt{48} \\ ==> l7-4\sqrt{3}l + l5-4\sqrt{4}l = 7-4\sqrt{3} - 5 + 4\sqrt{3} = 2 " alt="\sqrt{f(x)^2} = l f(x) l \ (modul) \\ ==> \sqrt{(7-4\sqrt{3}})^2 + \sqrt{(5-4\sqrt{3}})^2 \\ = l7-4\sqrt{3}l + l5-4\sqrt{3}l \\ tak kak 4\sqrt{3} = \sqrt{48} \\ ==> l7-4\sqrt{3}l + l5-4\sqrt{4}l = 7-4\sqrt{3} - 5 + 4\sqrt{3} = 2 " align="absmiddle" class="latex-formula">