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nhaxquin
2 năm trước
Tìm các giá trị nguyên của n để p/s A= 2n+5/n+3 có giá trị là số nguyên help.............................
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

Exercise 1: Viết lại câu từ chủ động sang bị động 1. They started a dancing class last week…………………………… …………………………………………… 2. Mr. Smith saw the accident………………………………………………. …………………………………………… 3. Somebody has taken my briefcase…………………………………………………….. …………………………………………… 4. The teacher returned our written work to us………………………………………… …………………………………………… 5. She has finished the report by noon…………………………………………………….. …………………………………………… 6. The mad dog bit the little boy………………………………………………………… …………………………………………… 7. The police have arrested five suspects………………………………………………. …………………………………………… 8. The doctor ordered him to take o long rest…………………………………………… …………………………………………… .9. Somebody has taken my briefcase………………………………………………… …………………………………………… 10. The teacher returned our written work to us………………………………………….. …………………………………………… 11. She has finished the report by noon………………………………………….. …………………………………………… .12. They are sweeping the streets………………………………………………….. …………………………………………… 13. The mailman had already delivered the mail……………………………………… …………………………………………… 14. He used to borrow my pen……………………………………………….. …………………………………………… 15. He had to finish his work on time………………………………………….. …………………………………………… 16. You ought to tell him early……………………………………………………….. …………………………………………… 17. They must widen the road to school this year. …………………………………………… 18. Have you done your homework?.................................................................... …………………………………………… 19. She is taking care of the baby girl…………………………………………………. ………………………………………… 20. Children should treat old men with respect………………………………………… ………………………………………… 21. She was wearing her new T-shirt when I met her yesterday……………………. ………………………………………… 22. The waiter brings me this dish………………………………………… ………………………………………… 23. Their grandmother told them this story when they visited her last week……… ………………………………………………………………………………………. 24. Her mother is preparing the dinner in the kitchen. ………………………………………… 25. We should clean our teeth twice a day. ………………………………………… 26. Tom will visit his parents next month. ………………………………………………………………… 27. Bill will invite Ann to the party. ………………………………………… 28. I won't write that letter. ………………………………………… 29. Hundreds of people visit the White House everyday. ………………………………………… 30. Everyone know this fact very well. ………………………………………… 31. They will send you the money at the end of the month. ………………………………………… 32. People speak Spanish in many countries. ………………………………………… 33. The children often read stories in the evening. ………………………………………… 34. That company will publish a textbook next year. Exercise 2: Chia các động từ sau 1. That novel __________ (write) by a famous artist. 2. The milk ____________ (deliver) every day. 3. Lan’s car __________ (repair) last month. 4. Phong _______________ (go/not) alone tonight by his family. 5. My mother let me _________ (use) her computer. 6. His car needs __________ (repair). 7. The date of that meeting _________(change/not) yet. 8. Look at this old house! They ________ (knock) down. Exercise 3: Cho dạng đúng của động từ trong ngoặc 1. Toshico had her car (repair) .............. by a mechanic. 2. Ellen got Marvin (type) ..................her paper. 3. We got our house (paint) .................. last week. 4. Dr Byrd is having the students (write ) ................... a composition. 5. Mark got his transcripts (send)................... to the university. 6. Maria is having her hair (cut) ......................... tomorrow. 7. Will Mr. Brown have the porter (carry)...........................his luggage to his car?

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