A, 25²

chuẩn =))

D, Đồng bằng Thanh Hóa

chúc bn học tốt

B

chúc bn học tốt =))

có ai biết giải bài này không giúp mình với mình đang cần gấp, xin cảm ơn

Bài 20: rút gọn 

1, \(\sqrt{9-4\sqrt{5}}.\sqrt{9+4\sqrt{5}}\)

2, \(\left(2\sqrt{2}-6\right).\sqrt{11+6\sqrt{2}}\)

3, \(\sqrt{2}.\sqrt{2-\sqrt{3}}\left(\sqrt{3}+1\right)\)

4, \(\sqrt{2-\sqrt{3}}\left(\sqrt{6}-\sqrt{2}\right).\left(2+\sqrt{3}\right)\)

5, \(\sqrt{27+10\sqrt{2}}:\dfrac{1}{\sqrt{\left(\sqrt{2}-5\right)^2}}\)

Bài 21: rút gọn 

1, \(5\sqrt{\dfrac{1}{5}}\)                         2,  \(\dfrac{12}{5}\sqrt{\dfrac{5}{4}}\)

3, \(\dfrac{30}{5\sqrt{6}}\)                          4, \(\dfrac{20}{2\sqrt{5}}\)

5, \(\dfrac{2-\sqrt{2}}{\sqrt{2}}\)

có ai biết làm bài này k hộ mình với mình đang cần gấp xin cảm ơn

1. So sánh ngang bằng.

a. Mary/thin/her brother.

_______________________________________________

b. A lemon/not sweet/ an orange. 

_______________________________________________

c. A donkey/not run/quick/ a horse.

_______________________________________________

d. This dress/twice/pretty/that one.

_______________________________________________

e. They/ drive a car/ dangerous/ we.         

_______________________________________________

2. So sánh hơn: (Nhấn mạnh các câu ss hơn)

a. this film /popular/ that one.       

_______________________________________________

b. A bird/can fly/slow/ a plane.

_______________________________________________

c. Ba/ friendly/ Nam.

_______________________________________________

d .Your house/far/from school /my house. _______________________________________________

e. My father / drive/ careful/ I

_______________________________________________

3. So sánh nhất: (Nhấn mạnh theo 2 cách đã học)

a. This road/short /way/ in the city.

_______________________________________________

b. Lan/ walk/ slow / in my class.

_______________________________________________

c. Indian tea/bad/ of all.

_______________________________________________

d. Anna/ work/ simple/girl/ in the world. _______________________________________________

e. Jack/ can tell/ the stories/ humourous/ in the world.

_______________________________________________

II. Rewrite these sentences

1.      This street is narrower than that one

Þ    That street ……………………………………………..

Þ    That street …………………………………………………

2. Linda drives more carefully than Peter

Þ    Peter……………………………………………

Þ    Peter…………………………………………………..

3.Your car is more convenient than mine

Þ    My car ……………………………………………………..

Þ    My car……………………………………………………..

4. We behave more politely than her

Þ    She……………………………………………………….

Þ    She ………………………………………………………

5.I  cook better than my mother

Þ    my mother……………………………………………………………..

Þ    my mother ………………………………………………………………

6. Anna isn’t as confident as me

=> I …………………………………….

7. This book isn’t as boring as that one

Þ    That book …........................................................

8. I don’t work as effectively as he does

=> He ………………………………………….

9. My bedroom isn’t so comfortable as yours

Þ    Your bedroom……………………………..

10. John didn’t speak English as well as Mary

=> Mary ………………………………………….

11. Peter can dance the most gracefully in my city

=> No one………………………………………………….

=> No one………………………………………………

12. Kangaroo is the most unique animal in the world

=> No……………………………………………………..

=> No……………………………………………………….

13. No river in the world is longer than Nile

=> Nile …………………………………………………

14. No student in my class learns Maths more intelligently than John

=> John……………………………………………………………………

15. If you read many books, you will have much knowledge

→ The more …………………………………………………………………….

16. He speaks too much and people feel bored.

→ The more …………………………………………………………………….

đây là chõ học chứ k phải linh tinh