Không dùng mtct, so sánh

A) \(\sqrt{65}\)+1 và \(\sqrt{63}\)+1

B)\(\dfrac{1}{\sqrt{8}}\)và \(\dfrac{1}{\sqrt{7}}\)

C)\(\sqrt{34,9}\) và 6

D) \(3\sqrt{25,5}\) và 14

E)\(2\sqrt{26}\)+4 và 13

F) \(\sqrt{24}\)+\(\sqrt{63+3}\)và 16

G) \(\dfrac{46-3\sqrt{49}}{4}\)và \(\sqrt{50}\)

tính

1.\(\sqrt{147}+\sqrt{54}-4\sqrt{27}\)

2.\(\sqrt{28}-4\sqrt{63}+7\sqrt{112}\)

3.\(\sqrt{49}-5\sqrt{28}+\dfrac{1}{2}\sqrt{63}\)

4.\(\left(2\sqrt{6}-4\sqrt{3}-\dfrac{1}{4}\sqrt{8}\right).3\sqrt{6}\)

5.(\(2\sqrt{1\dfrac{9}{16}}-5\sqrt{5\dfrac{1}{16}}\)):\(\sqrt{16}\)

6.\(\left(\sqrt{48}-3\sqrt{27}-\sqrt{147}\right):\sqrt{3}\)

7.\(\left(\sqrt{50}-3\sqrt{49}\right):\sqrt{2}-\sqrt{162}:\sqrt{2}\)

8.\(\left(2\sqrt{1\dfrac{9}{10}}-\sqrt{5\dfrac{1}{10}}\right):\sqrt{10}\)

9.\(2\sqrt{\dfrac{16}{3}}-3\sqrt{\dfrac{1}{27}}-6\sqrt{\dfrac{4}{75}}\)

10.\(2\sqrt{27}-6\sqrt{\dfrac{4}{3}}+\dfrac{3}{5}\sqrt{75}\)

11.\(\dfrac{\sqrt{18}}{\sqrt{2}}-\dfrac{\sqrt{12}}{\sqrt{3}}\)

12.\(\dfrac{\sqrt{27}}{\sqrt{3}}+\dfrac{\sqrt{98}}{\sqrt{2}}-\sqrt{175}:\sqrt{7}\)

13.\(\left(\dfrac{\sqrt{8}}{\sqrt{2}}-\dfrac{\sqrt{180}}{\sqrt{5}}\right).\sqrt{5}-\sqrt{\dfrac{81}{11}}.\sqrt{11}\)

14.\(\sqrt{8\sqrt{3}}-2\sqrt{25\sqrt{12}}+4\sqrt{\sqrt{192}}\)

15.\(\left(3\sqrt{2}-2\sqrt{3}\right)\left(3\sqrt{2}+2\sqrt{3}\right)\)

16.\(\left(1+\sqrt{5}-\sqrt{3}\right)\left(1+\sqrt{5}+\sqrt{3}\right)\)