Question

[Hiểu Linh Trần]

So sánh:

a) \(1-\sqrt{3}\&\sqrt{0,2}\)

b) \(\sqrt{0,5}\&\sqrt{3}-2\)

c) \(\sqrt{2015}+\sqrt{2018}\&\sqrt{2016}+\sqrt{2017}\)

Answer 1

[kudo shinichi]

Ta có: \(\hept{\begin{cases}\sqrt{0,2}>0\\1=\sqrt{1}< \sqrt{3}\Rightarrow1-\sqrt{3}< 0\end{cases}\Rightarrow1-\sqrt{3}< \sqrt{0,2}}\)

Ta có: \(\hept{\begin{cases}\sqrt{0,5}>0\\\sqrt{3}< \sqrt{4}=2\Rightarrow\sqrt{3}-2< 0\end{cases}\Rightarrow\sqrt{0,5}>\sqrt{3}-2}\)