c: \(\sqrt{3+\sqrt{8}}=\sqrt{2}+1\)

d: \(\sqrt{11+4\sqrt{6}}=2\sqrt{2}+3\)

e: \(\sqrt{14-6\sqrt{5}}=3-\sqrt{5}\)

12 A

13 C

14 C

15 C

16 B

14 A

18 C

19 A

20 D

Máy mình lỗi hay đúng là không có câu hỏi nào vậy nhỉ?

7D

8C

9D

10B

11C

3 D

4 B

5 C

6 C

7 B

8 A

9 A

10 C

11 B

12 C

3. D

4. B

5. C

6. C

7. B

8. A

9. A

10. D

11. B

12. C

Câu 5: C  , câu 6 :  C . Câu 7 : B. Câu 9 : A .câu 11: B câu 12 :D

13 A

14 C

15 B

16 C

17 A

18 B

19 D

20 C

30 collection

-----------------------------------

31 Do you go on social media every day?

32 I don't watch much TV, exept a bit on Youtube

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33 .........forget to give me those stamps

34 ........... fluent E speaker

35 ........ singing an E song?

36 ........ Lan is a poor student, she studies very well

She likes playing guitar.

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