user-avatar
521863355247308
2 năm trước
Bài 1 : (2 điểm) : Thực hiện phép tính và rút gọn các biểu thức sau : a)A=(1/(3-√5)+1/(3+√5)):√5 b) B=√48+√(5 1/3)+2√75-5√(1 1/3) Bài 1 : (2 điểm) : Thực hiện phép tính và rút gọn các biểu thức sau : a)A=(1/(3-√5)+1/(3+√5)):√5 b) B=√48+√(5 1/3)+2√75-5√(1 1/3)
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

Làm giúp mình với ạ, có giải thích luôn. Mình cảm ơn 1. I_________with my aunt when I am on holiday in Ho Chi Minh City next month. A. will have been staying B. will have stayed C. stay D. will be staying 2. He will tell us the truth when he_________. A. will arrive B. would arrive C. arrives D. will have arrived 3. A: Hurry up! We’re waiting for you. What’s taking you so long? B: I_________for an important phone call. Go ahead and leave without me. A. wait B. will wait C. am waiting D. have waited 4. A: Hello? Ann? This is Janice. How are you? B: Janice? What a coincidence! I_________about you when the phone rang. A. was just thinking B. just thought C. have just been thinking D. was just thought 5. When I first arrived at state University, I_________by the size of campus. Fortunately, I found_________three helpful people who_________me from total confusion. A. had been overwhelmed / saved B. was overwhelmed / saved C. was overwhelmed / was saving D. was overwhelmed / had saved 6. A: Why did you buy all this sugar and chocolate? B: I_________a delicious dessert for dinner tonight A. make B. will make C. am going to make D. will have made 7. Since my roommate_________yet, Mrs Stanton_________me all around the dormitory. A. does not come / showed B. has not come / showed C. was not coming / showed D. had not come / showed 8. By the end of this month he_________as one of the assistants of Bill Gates for five years. A. had worked B. will work C. will have been working D. had been working 9. It’s only the second time I_________a football match in a stadium. A. saw B. see C. will see D. have seen 10. Time_________over. We_________fifty applications in all. A. had been / received B. is / have received C. is / received D. was / had been receiving 11. Previous studies found that girls who have earlier puberty_________tendency to have higher body mass index. A. have B. has C. would have D. is having 12. For the time being we_________for the exam, but this time tomorrow we_________the best movie of this year. A. study / will watch B. are studying / will be watching C. have been studying / are watching D. are studying / will have watched 13. James Bond always drank champagne in the novels, although he_________to wine by the time he_________it to the silver screen. A. had switched / made B. has switched / has made C. switched / had made D. was switching / would make 14. These days, people who_________manual work,often receive far more money than clerks who_________in offices. A. are doing / are working B. were doing / were working C. have done / have worked D. do / work 15. The theatre company_________a grant of £6,000 and it is seeking a further £2,000 from elsewhere now. A. will be given B. has been given C. is given D. was given 16. The injured_________to the ambulance while the people_________around the crime scene. A. were being taken / were gathering B. have been taken / gathered C. have been taken / gather D. were taken / would gather 17. It’s against the law to kill the Borneo orangutans. They_________extinct. A. became B. have become C. become D. are becoming 18. What were you doing while_________for the others to come? A. were you waiting B. you were waiting C. had you been waiting D. you had been waiting 19. When Peter was a child, there_________a cinema near his house. A. used to be B. used to have C. used to be being D. used to have been 20. I wasn’t hungry at lunchtime because I_________a big breakfast. A. have B. had C. have had D. had had 21. Tim is disappointed at not getting the job, but he_________it soon. A. gets over B. has got over C. got over D. will get over 22. Việt Nam currently_________17th among the most heavily plastic-polluted countries in the world, with half a million of tonnes of plastic waste ending up in the oceans. A. rank B. will rank C. ranks D. has ranked 23. By this time next summer all my friends_________their studies and found a job. I, on the other hand, _________anything. A. will complete/ will not accomplished B. will have completed/ will not have accomplished C. are going to complete/ aren’t going to accomplish D. will be completing/ will not be accomplishing 24. John came in with a very dirty face and I wondered what he_________ A. does B. did C. has done D. had done 25. When the article arrived, the editor read the first sentence and then_________to publish it. A. has refused B. is refused C. refused D. had refused

2018 © Loga - Không Ngừng Sáng Tạo - Bùng Cháy Đam Mê
Loga Team