Question

Answer 1

Bài 2:

a: \(=2\sqrt{5}+3\sqrt{5}+4\sqrt{5}=9\sqrt{5}\)

b: \(=10\sqrt{2}-9\sqrt{2}+4\sqrt{2}=5\sqrt{2}\)

c: \(=\sqrt{3}+3\sqrt{3}-3\sqrt{3}=\sqrt{3}\)

d: \(=\dfrac{3}{2}\cdot3\sqrt{5}-\dfrac{1}{2}\cdot2\sqrt{5}+3\cdot4\sqrt{5}=\dfrac{31}{2}\sqrt{5}\)

e: \(=\sqrt{5}-\dfrac{2}{5}\cdot5\sqrt{5}+\dfrac{2}{3}\cdot6\sqrt{5}=3\sqrt{5}\)

g: \(=4\sqrt{3}-\dfrac{4}{3}\sqrt{3}+10\sqrt{3}-\dfrac{10}{3}\sqrt{3}=\dfrac{28}{3}\sqrt{3}\)

h: \(=2-\sqrt{3}+4-\sqrt{3}=6-2\sqrt{3}\)

k: \(=\sqrt{3}-1-\sqrt{3}-1=-2\)

m: \(=2\sqrt{2}+\sqrt{6}-2\sqrt{2}+\sqrt{6}=2\sqrt{6}\)