[tex]\displaystyle (\frac{\sqrt{6} }{\sqrt{3} }+\frac{\sqrt{8} }{\sqrt4} })*\sqrt{2}=(\sqrt{2}+\frac{2\sqrt{2} }{2})\sqrt{2}=(\sqrt{2}+\sqrt{2})\sqrt{2}=2\sqrt{2}\sqrt{2}=2*2=4[/tex]