Question

Answer 1

giúp mình bài này với!

 

Answer 2

\(a,=\dfrac{\sqrt{2}\cdot\sqrt{3}}{3}=\dfrac{\sqrt{6}}{3}\\ b,=\dfrac{1}{\sqrt{720}}=\dfrac{\sqrt{720}}{720}=\dfrac{12\sqrt{5}}{720}=\dfrac{\sqrt{5}}{60}\\ c,=\dfrac{\sqrt{3}\cdot\sqrt{98}}{98}=\dfrac{7\sqrt{6}}{98}=\dfrac{\sqrt{6}}{14}\\ d,=\dfrac{\sqrt{3}\cdot\sqrt{700}}{700}=\dfrac{10\sqrt{21}}{700}=\dfrac{\sqrt{21}}{70}\)

Answer 3

a: \(\sqrt{\dfrac{2}{3}}=\dfrac{\sqrt{6}}{3}\)

b: \(\sqrt{\dfrac{1}{720}}=\dfrac{\sqrt{5}}{60}\)

c: \(\sqrt{\dfrac{3}{98}}=\dfrac{\sqrt{6}}{14}\)

d: \(\sqrt{\dfrac{3}{700}}=\dfrac{\sqrt{21}}{70}\)