viet cac bieu thuc sau duoi dang tich;

a,x\(^3\)y\(^3\)+225

viet cac bieu thuc sau duoi dang tich:

a, 27x\(^3\)-27x\(^2\)+3x+1

b,x\(^3\)-3x\(^2\)+3x-1

c,\(\dfrac{1}{27}\)+x\(^3\)

d, 0,001-1000x\(^3\)

Bài 7. Điền vào dấu ? một biểu thức để được một hằng đẳng thức, có mấy cách điền

a,(x+1).?

b,(x\(^2\)+x+1).?

c,(x\(^2\)+2x+4).?

d,(x-2).?

e,x\(^2\)+2x+?

g,(4x\(^2\)+?+4)

6. Fill each blank with an article (a/ an / the/ x) to complete the sentences..
1. How far is it from here to ________________ airport?
2. “What’s ____________ capital of Spain?” – “It’s Madrid”.
3. My father works in _____________ office ______________ city center.
4. ______________ earth is ______________ planet of ______________ solar system.
5. She was born in ____________ village in ____________ north of England.
6. ____________ village where she was born has _____________ beautiful river.
7. Who is ____________ best singer in _____________ United Kingdom?
8. Can you switch off ____________ television? Nobody’s watching it.
9. He felt bored with _____________ woman who sat beside him at the party.
10. The ship was crossing _____________ Atlantic Ocean when it hit ____________ huge iceberg.
11. Mount Everest is _____________ hightest mountain in ____________ world.
12. ____________ Mississppi River flows through several states of _____________ United States.
13. My grandparents live in ____________ old house in ____________ south of Dong Nai provice. There is ____________ large garden behind ____________ house. They grow some fruit trees and vegetables in ____________ garden.
14. There was ____________ accident near my house this morning. ____________ taxi crashed into ___________ lamp post. ____________ taxi was damaged, but ___________ driver of ___________ taxi was not hurt.
15. This morning I had ____________ sandwich and ____________ cup of coffee for breakfast. ___________ sandwich was OK, but ____________ coffee was terrible.
16. Miss Lin speaks ________________ Chinese.
17. Eli likes to play ________________ volleyball.
18. My daughter is learning to play ________________ guitar at her school.
19. Can anyone give me ________________ hand, please because I have just fallen over?
20. Please meet me at the train station in ________________ hour from now.

viet cac bieu thuc sau duoi dang tich: x^3 y^3+225

Exercise 3: Choose the best answers

1. She has worked for this company ……………many years, ……………..1990.

A. since / since B. for / since C. for / in D. since / in

2. I haven’t seen Julie ………………..Christmas.

A. for B. from C. since D. during

3. My wife and I ……………three times since we ……………….married.

A. moved / got B. moved / have got C. have moved / got D. have moved / have got

4. We are talking about the car ………………has a red roof

A. who B. whom C. which D. where

5. They have changed the law.

A. The law has been change B. The law has been changedC. The has to be changed D. The law has been changing

6. This is the bank ………………was robbed yesterday.

A. which B. that C. who D. A & B are correct

7. He came with a friend ………………waited outside.

A. whom B. which C. who D. when

8. I have received your letters.

A. Your letters have been received B. Your letters have been receiveC. Your letters has been received D. Your letters have received

9. Mary, ………………knew nothing about the mountain, thought it would be safe to climb alone.

A. who B. that C. whom D. A & B are correct

10. The book about ……………..I told you yesterday has been stolen.

A. that B. who C. whom D. which

tim loi sai:

3. This motorbike has just been clean by my father.

4. This is the floppy disk which I have been looking for it all this morning.

5. Many houses has been destroyed by the storm.

6. She is the most beautiful woman who I have ever met.

7. That is the man who he told me the bad news.

8. She has hoped for a rise in salary since six months.

Combine the following sentences using relative pronouns
1. I wanted the painting. You bought it. →…………………………………………………………………………………………
2. We threw out the computer. It never worked properly. →…………………………………………………………………………………………
3. This is the lion. It’s been ill recently. →…………………………………………………………………………………………
4. That’s the building. I passed by it.
→…………………………………………………………………………………………
5. They are the shops. I got these flowers from them.
→…………………………………………………………………………………………
6. That’s the magazine. I got it for you yesterday.
→…………………………………………………………………………………………
7. This is Kensington Garden. Every visitor from abroad admires it.
→…………………………………………………………………………………………
8. I took a picture of the rainbow. It appeared in the sky after the
shower. →…………………………………………………………………………………………
9. We enjoyed the music. We heard it at the concert last
Sunday. →…………………………………………………………………………………………
10. Oxford is a great university. It is known all over the world.
→…………………………………………………………………………………………
11. The tall man is the teacher of English. My father is talking to him.
→…………………………………………………………………………………………
12. The chair is broken in to pieces. My father used to sit on it.
→…………………………………………………………………………………………
13. The building is our school library. It has just been built in that area. →…………………………………………………………………………………………
14. You can’t borrow the books. They are in this section.
→…………………………………………………………………………………………
15. I have a class. It begins at 9.00.
→…………………………………………………………………………………………
16. We know a park. It has the zoo and the open- air theatre.
→…………………………………………………………………………………………
17. A lion is an animal. This animal lives in Africa.
→…………………………………………………………………………………………
18. My sister asked me a question. I couldn’t answer it.
→…………………………………………………………………………………………
19. The bus is always crowded. I take it to school every day.
→…………………………………………………………………………………………
20. The blouse is made of silk. Mary is wearing it.
→…………………………………………………………………………………………
21. The plane leaves at 7.00. I’m taking it to New York.
→…………………………………………………………………………………………
22. I had a good time on the trip. I took it to National Park.
→…………………………………………………………………………………………
23. The chair is hard. I’m sitting on it.
→…………………………………………………………………………………………
24. I want to tell you about the party. I went to it last night.
→…………………………………………………………………………………………
25. They are the postcards. They arrived yesterday.
→…………………………………………………………………………………………
26/ I need repair my car. It was broken yesterday.
→………………………………………………………………………………………… 27/The garden has a tennis court. It is at the back of the house.
→…………………………………………………………………………………………
28/ The chair was broken. It is now mended.
→…………………………………………………………………………………………
29/ The pencil s lying on the desk. It is mine.
→…………………………………………………………………………………………
30/ The bird has a very sweet song. It builds its nest on the ground.
→…………………………………………………………………………………………
31/ We received the letter today. It had no stamp on

32/ This is the chair. My parents gave it to me. →…………………………………………………………………………………………

33/ I wanted the painting. You bought it. →…………………………………………………………………………………………

34/ We threw out the computer. It never worked properly. →…………………………………………………………………………………………

35/ This is the lion. It’s been ill recently. →…………………………………………………………………………………………

36/ That’s the building. I passed by it. →………………………………………………………………………………………… 37/ They are the shops. I got these flowers from them. →…………………………………………………………………………………………

38/ That’s the magazine. I got it for you yesterday. →…………………………………………………………………………………………

39/ This is Kensington Garden. Every visitor from abroad admires it. →…………………………………………………………………………………………

40/ I took a picture of the rainbow. It appeared in the sky after the shower. →…………………………………………………………………………………………

41/ We enjoyed the music. We heard it at the concert last Sunday. →…………………………………………………………………………………………

42/ Oxford is a great university. It is known all over the world. →…………………………………………………………………………………………

43/ The tall man is the teacher of English. My father is talking to him.

Cho hình thang ABCD (AB song song CD) có AB<CD, AD=BC=AB, góc BDC= 30 độ. Tính các góc còn lại của hình thang.