Đáp án:
$m\neq \dfrac{-1}{2}$
Giải thích các bước giải:
Để hpt có nghiệm duy nhất thì :
$\dfrac{1}{m}\neq -2$
$1\neq -2m$
.
cho A=5+5^2+5^3+....+5^100 a) Tìm Số tự nhiên n sao cho 4A+5=5^n b)CMR A chia hết cho 30
giúp với mọi người ơi/ đợi mòn mỏi lâu quá/ mk vote 5 sao liền Replace the relative clauses by an infinitive or infinitive phrase, or by past participle. 1. He was the first man who left the burning building. 2. The last person who leaves the room must turn out the lights. 3. My brother is the only one who realized the danger. 4. I have some homework that I must do tonight. 5. She's the only woman who was appointed to the board. 6. I wish we had a garden that my children could play in. 7. Have you brought a book that Kevin can read ? 8.The fifth man who was interviewed was entirely unsuitable 9. They will widen the road which leads to the village. 10. The man who is carrying the suitcase is a very famous businessman. 11. The news which was given to us was not correct. 12. Children that were born in poor families are often good and hard-working. 13. I like the photos which were taken when we were on holiday in Dallas. 14. Do you know the man who is talking to Nga? 15. Have you ever read the books which were written by Jack London? 16. Hung is usually the first student who comes to class, and is the last one that leaves the classroom everyday. 17. Huong is the most suitable applicant who can get the job. 18. Every member in my family likes the food which is cooked by my father. He is a good cook 19. In hot weather, you should wear the clothes which are made of cotton. 20. I don't like the films which have unhappy endings. 21. To improve your English, you should read books which are written in English often. 22. It's a pity that I can't join you. I have a lot of things that I must do tonight. 23. Wearing shoes that are made of real leather often makes us feel more comfortable. 24. This is the last questions that you have to answer. 25. I like all of the presents which were given to me on my last birthday. 26. Do you think that people who are optimistic can easily get success in life? 27. Congratulations! You are the first person that get the prize. 28. Students who study hard often get good marks. 29. Banh Chung is a special kind of cake that is made of sticky rice, beans, and fatty pork. 30. He used to take me along the beautiful streets that were decorated with colorful flowers.
vẽ môi ik ,đẹp lên chút nhoa . nhừng ai vẽ đẹp tí >.<
Ở vùng đồng bằng sông Hồng có những ngư trường nào dưới đây
các cặp phân số sau đây có bằng nhau không a) 3/4 và 27/36 b) -4/5 và 8/-9 c) 10/14 và -15/-21 d) 6/15 và -8/20 ai giải được làm ny mình đồng thời id ff mình là 1714450592
qua bài thơ tức cảnh pác bó, em hãy nêu cảm nhận về bức chân dung tinh thần của Hồ Chí Minh
Dựa vào thông tin SGK hãy nêu quy trình hấp thụ nhiệt của Trái Đất và không khí?
Cảm nhận tình yêu nước của tác giả qua đoạn thơ sau: " Bên sông các bô lão hỏi ý ta sở cầu? .................. Nghìn thu chỉ có anh hùng lưu danh." Giúp mk vs!!! Mk cảm ơn nhiều.
I. Choose the best answer : 9. Everglade National Park is a sub- tropical wilderness in the southeastern United States. a. tropical b. sub - tropical c. temperate d. frigid 10. …………………. means a state of continuing to live or exist. a. park b. survival c. zone d. contamination 11. Cuc Phuong National Park is ……… 160 km South West of Ha Noi. a. lied b. established c. abandoned d. located 12. Nearly 1,000 of the world's bird species are …………… with extinction. a. threatened b. endangered c. protected d. abandoned 13. Tourists go to Cuc Phuong National Park to look …………. the 1,000-year-old tree. a. to b. on c. of d. at 14. If you …………….. us about the bad service, we'd have eaten there. a. didn't tell b. wouldn't have told c. hadn't told d. had told 15. If Alan had come sooner, he ……..…. dinner with us. a. could have eaten b. would being eaten c. was eating d. could eat 16. Mary ……………. a new car if she had had enough money. a. had bought b. would have bought c. would have buyed d. would buy 17. If I ………………… her address, I would have sent her a present. a. had know b. would have known c. had knew d. had known 18. I would have watched the football match on TV if I ……………….. at home last night. a. had stayed b. stayed c. stays d. would have stayed
Viết lại câu 1. Who knows what's going to happen in the next few days (knowing) 2. I'm certain that the burglar got into the building through the bathroom window (entry) 3. I was disappointed to hear that my favorite teacher had decided to leave (came) 4. My passport needs renewing because I'm going to Greece (get) 5. Could I ask you if you'd mind donating some money to our cause (wondering) 6. Repairing that old computer is pointless in my view (point) 7. Playing video games is not funnier than playing sports (fun)
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