Question

so sánh:

a, 21 và \(\sqrt{147}\)

Answer 1

Ta có: 21=\(\sqrt{441}\)

Mà \(\sqrt{441}>\sqrt{147}\)

\(\Rightarrow\)21>\(\sqrt{147}\)

Answer 2

Ta có:

\(21=\sqrt{441}\)

Vì 441 > 147

\(\Rightarrow\sqrt{441}>\sqrt{147}\)

\(\Rightarrow21>\sqrt{147}\)

Answer 3

Ta có 

\(21=\sqrt{441}\)

Vì \(441>147\)

\(\Rightarrow\sqrt{441}>\sqrt{147}\)

Vậy \(21>\sqrt{147}\)