2√8√3 -2√5√3 -3√20√3

`2\sqrt{8\sqrt{3}}-2\sqrt{5\sqrt{3}}-3\sqrt{20\sqrt{3}}` `=4\sqrt{2\sqrt{3}}-2\sqrt{5\sqrt{3}}-6\sqrt{5\sqrt{3}}` `=4\sqrt{2\sqrt{3}}-8\sqrt{5\sqrt{3}}`