Question

so sánh : \(\sqrt{50}\) + \(\sqrt{26}\)+ 1 và \(\sqrt{168}\)

Answer 1

Ta có:

\(\sqrt{50}+\sqrt{26}+1>\sqrt{49}+\sqrt{25}+1\)

\(=7+5+1=13\)

Mà \(\sqrt{168}< \sqrt{169}=13\)

Vì \(\sqrt{50}+\sqrt{26}+1>13>\sqrt{168}\)

Nên \(\sqrt{50}+\sqrt{26}+1>\sqrt{168}\)

Answer 2

ban kia lam dung roi do

k tui nha

thanks

Answer 3

Ta có : 

\(\sqrt{50}+\sqrt{26}+1>\sqrt{49}+\sqrt{25}+1=7+5+1=13=\sqrt{169}>\sqrt{168}\)

Vậy \(\sqrt{50}+\sqrt{26}+1>\sqrt{168}\)

Chúc bạn học tốt ~ 

Answer 4

13,17008733 > 12,9614814

Answer 5

Ta có :\(\sqrt{50}+\sqrt{26}+1>\sqrt{49}+\sqrt{25}+1\)

\(=>\sqrt{50}+\sqrt{26}+1\)\(>7+5+1=13\)

Mà \(\sqrt{168}=13\)

\(=>\sqrt{50}+\sqrt{26}+1>\sqrt{168}\)

Answer 6

Trả lời:

Vì\(0< 168< 169\)

\(\Rightarrow\sqrt{168}< \sqrt{169}\)

\(\Leftrightarrow\sqrt{168}< 13\)(1)

Mà\(13=7+5+1\)

\(\Rightarrow13=\sqrt{49}+\sqrt{25}+1\)

Vì\(50>49>0\)

\(\Rightarrow\sqrt{50}>\sqrt{49}\)

\(26>25>0\)

\(\Rightarrow\sqrt{26}>\sqrt{25}\)

Do đó: \(\sqrt{50}+\sqrt{26}>\sqrt{49}+\sqrt{25}\)

\(\Rightarrow\sqrt{50}+\sqrt{26}+1>\sqrt{49}+\sqrt{25}+1\)

Hay\(\sqrt{50}+\sqrt{26}+1>13\)(2)

Từ (1) và (2) \(\Rightarrow\sqrt{50}+\sqrt{26}+1>\sqrt{168}\)

Vậy\(\sqrt{50}+\sqrt{26}+1>\sqrt{168}\)

Hok tốt!

Vuong Dong Yet

Answer 7

Bạn kia là bạn nào mới quan trọng