\sqrt{10}+\sqrt{20}+\sqrt{30}=\sqrt{10}+\sqrt{10*2}+\sqrt{10*3}=\sqrt{10}+\sqrt{10}*\sqrt{2}+\sqrt{10}*\sqrt{3}=\sqrt{10}(1+\sqrt{2}+\sqrt{3})
\sqrt{10}+\sqrt{20}+\sqrt{30}=\sqrt{10}+\sqrt{10*2}+\sqrt{10*3}=\sqrt{10}+\sqrt{10}*\sqrt{2}+\sqrt{10}*\sqrt{3}=\sqrt{10}(1+\sqrt{2}+\sqrt{3})