Question

So sánh 

\(\sqrt{48}\) và 13-\(\sqrt{35}\)

Answer 1

Có:\(\sqrt{48}< \sqrt{49}=7\)

\(13-\sqrt{35}>13-\sqrt{36}=7\)

\(\Rightarrow\sqrt{48}< 13-\sqrt{35}\)

Answer 2

\(\sqrt{48}+\sqrt{35}< \sqrt{49}+\sqrt{36}=7+6=13\)

\(\rightarrow\sqrt{48}< 13-\sqrt{35}\)

Answer 3

Ta có:

\(\sqrt{48}< \sqrt{49}=7\left(1\right)\)

\(13-\sqrt{35}>13-\sqrt{36}=13-6=7\left(2\right)\)

Từ (1) và (2) :

Suy ra: \(\sqrt{48}< 13-\sqrt{35}\)

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