giải phương trình: \(\frac{\sqrt{2x-3}}{\sqrt{2x+1}}=2\)

Giải phương trình:

\(\frac{3x}{\sqrt{3x+10}}+1=\sqrt{3x+1}\)

CM a\(\ge\)0, b\(\ge\)0 thì \(\sqrt{a}\)+\(\sqrt{b}\)\(\ge\)\(\sqrt{a+b}\)

2)Nêu cú pháp cùng tính chất của các thành phần trong câu lệnh lặp với số lần biết trước, cho ví dụ?

I.Finish each of the following sentences in a such way that is a similar as possible in meaning to the

1. They have just produced a new kind of plants.

=>A new kind of … ……………….

2 They had bad marks because they were lazy.

=>They were...........................................................

3. She moved to that house in 1973..

=>She has............................................................

4.She doesn’t have time to revise the lesson

.=> She wishes……………………………………………

5.Lan said “I will be very busy tomorrow.”

=> Lan.........................................................................

7. It’s too hot. Open the window, please.

® I suggest ...................................................................................................................................

8. They will write the book on animal next year.

® The book ..................................................................................................................................

9. “ Can you speak any foreign language?”

® The examiner asked me .............................................................................................................

10. . They will build a new mall here.

→ A new mall …………………………………………

12. Peter said, “ I’m living in London now”

→ Peter said ......................................................

14. It takes Minh 2 hours to do his homework every day.

->Minh spends ……………………………………

15. My mother used to make us clean the house.

-> We used ………………………………………..

16. I think we should go out for a walk.

- What about……………………………….?

17. It’s a pity. He won’t come to the party tonight.

=> I wish_____________________

18. "Why doesn’t your brother come here on time?" she asked me.

-> She asked me ______________________

19. My brother love to learn English.

-> My brother is fond_____________________________

20. They use computers to design new model

-> Computers are __________________________

22.They have just bought some English books.

→ Some English books.................................................

23.Minh last wrote to his pen pal five months ago.

→ Minh hasn’t .........................................

24. "Where are you now ,Hoa ?" asked Mr. Thanh.

→ Mr. Thanh asked ..................................

26. “ Do you want me to go with you, Hoa?” He asked

->He asked___________________________

27. My sister started studying English four years ago.

=> My sister has ______________________________

28. “Do you go to school on Sunday?” my friend asked.

=> My friend asked _________________________

29. They built a supermarket near the airport last year.

=> A supermarket _________________________.

30. “Shall we meet at the school gate?” Peter said.

=> Peter suggested _____________

32. They will invite her to the party.

=> She ___________________________________

33. They said to him “We are learning English now.”

=> They said __________________________

34. “Where are you going, Hoa?” said Tuan. => Tuan asked ______________________________

viết chương trình tính 100! ( với n là số tự nhiên đầu tiên được nhập từ bàn phím)

phân tích đa thức sau thành nhân tử

-2x^4-7x^3-x^2+7x+3

They have moved to the city to look for jobs, haven't they?

A. Correct

B. Incorrect