Bài 3:
a: \(=2+\sqrt{2}\)
b: \(=3-\sqrt{3}\)
c: \(=\sqrt{2}\left(2\sqrt{2}+\sqrt{2}\right)=3\sqrt{2}\cdot\sqrt{2}=6\)
d: \(=\sqrt{5}\cdot\left(2\sqrt{5}-\sqrt{5}\right)=5\)
e: \(=\left(\dfrac{\sqrt{6}}{3}+\dfrac{5}{3}\sqrt{6}-2\sqrt{6}\right)\cdot\sqrt{6}\)
\(=\dfrac{1}{3}+\dfrac{5}{3}-12=2-12=-10\)