giải phương trình x(x+1)(x+2)(x+3)=24

BÀI 1 : Cho tam giác ABC. M là trung điểm AC. Trên tia đối của tia MB lấy điểm D sao cho BM = MD. a/ Chứng minh : tam giác ABM = tam giác CDM. b/ Chứng minh : AB // CD c/ Trên DC kéo dài lấy điểm N sao cho CD =CN (C ≠ N) chứng minh : BN // AC.

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Điện tích. Giúp mình bài này với

"Khi nhắc đến bạo lực, bắt nạt học đường, nhiều người nói “đây là chuyện trẻ con”, “đi học ai chẳng thế”… Nhưng nhiều vụ việc có hậu quả không thể khắc phục đã xảy ra như bị thương, mất mạng vì đánh nhau, trả thù. Cũng có những trường hợp không tổn thương thể xác, nhưng vết thương tinh thần vì từng bị bắt nạt vẫn còn cho đến khi trưởng thành, thậm chí đến hết cuộc đời. Tháng 8 năm 2019, một người đàn ông 69 tuổi trong buổi họp lớp đã rút súng bắn chết một người bạn từng bắt nạt mình 53 năm trước. Nhiều người thả “haha” trong bài đăng về chuyện này, nhưng khi nghĩ đến việc mỗi lần say rượu, người đàn ông này đều nhắc đến chuyện từng bị bắt nạt, chắc hẳn sẽ còn ít người muốn cười. Và ở tuổi 69, ông ta vẫn yêu cầu người kia xin lỗi, sau đó nổ súng khi không nhận được lời xin lỗi đã chờ 53 năm. Theo các nghiên cứu, 40% người trên 25 tuổi từng bị bắt nạt đều gặp phải dấu hiệu về tâm thần, 15% số người từng bị bắt nạt nghĩ đến chuyện trả thù khi lớn lên. Không chỉ vậy, 5% số người từng bị bắt nạt trở thành kẻ đi bắt nạt để thỏa mãn những tổn thương tâm lý." (Trung tâm tin tức VTV24) Từ đoạn trích trên, hãy viết một bài văn ngắn bày tỏ suy nghĩ của mình về vấn đề bạo lực học đường . hiện nay. Cái này mink sắp phải nộp rồi mong mọi người giúp đỡ . Đề bài và cái bài ở vở là cô mink giao nha

Britain is now a highly industrialized country and there are only 238,000 farms in the UK. More and more farmers leave the land because they can not earn enough money to survive. Only large farms are economic and because of this most British farm are big. They usually grow cereals in the east of England and raise sheep and cowsin the north of England and Scotland. The small family farms often have to earn more money by offering bed and breakfast accommodation to tourists. Farming methods in Britain have also changed. Fields used to be quite small, divided by hedges which were sometimes a thousand years old and full of wild flowers and birds. Many hedges were pulled up to allow farmers to use mordern machinery. Now most fields in England are large by European standards. 17.Why do British farmers give up farm work? . A.Because they are tired of the farm work B. Because they can’t earn their own living by farming C. Because they want to continue to live D. Because they are forced to leave the land 18. Most British farms are big because_________ . A. there are plenty of abandoned land B.farming is now industrialized C. small farms are uneconomic D. most British farmers are rich 19. The small family farms often offer bed and breakfast accommodation to tourists ______. A. to show their friendship B. because they want to have more tourists to their farms C. in order to improve their earnings D. so that the tourists will return in their farm the next time 20. Fields on British farms were __________ . A. seperated from each other by hedges B. full of wild flowers and birds C. a thousand years old D. all are correct 21. Which of the following sentences is not true? A. Industries are developed in Britain B. Breeding farms are usually in the north of England C. Many hedges are pulled down for farmers to ex pand their farms D. Most fields in England are now larger than they used to be Make letter A, B, C or D to indicate the sentence that is closest in meaning to the given one. 22.No other city in Vietnam is as large as HCMC A. HCMC is as large as other cities in VietnamB. HCMC is the largest city in Vietnam C. HCMC is the most largest in VietnamD. No cities in Vietnam is much larger than HCMC 23. “Shall we go for a walk?” said Peter. A. He suggested we shall go for a walk. B. He suggested to go for a walk. C. He suggested go for a walk. D. He suggested going for a walk. 24. Although the traffic was bad yesterday, I arrived at the meeting on time. A. So the traffic was bad yesterday, I arrived at the meeting on time. B. Because the traffic was bad yesterday, I arrived at the meeting on time. C. Since the traffic was bad yesterday, I arrived at the meeting on time. D. Though the traffic was bad yesterday, I arrived at the meeting on time. 25. My sister can’t get good job because she doesn’t speak English well . A. If my sister gets the job, she speaks English well. B. If my sister speaks English well, she can get the good job. C. If my sister spoke English well, she could get the good job. D. If my sister spoke English well, she can get the good job.

Mark letter A, B, C, or D to indicate the word whose underlined part is pronounced differently from that of the others in each group. 1. A. comprised B. admired C. listened D. gathered 2. A. climate B. highland C. village D. website Mark letter A, B, C, or D to indicate the word whose main stress position is placed differently from that of the others in each group 3. A. engineer B. designer C. mechanic D. musician 4. A. invite B. visit C. improve D. agree Mark letter A, B, C, or D to indicate the correct preposition that completes the sentence. 5. I’m going to see her………….at the airport tomorrowA. off B. up C. on D. down 6. They have gone…..an excursion to the suburbs.A. on B. forC. inD. up Mark letter A, B, C, or D to indicate the word OPPOSITE in meaning to the underlined word. 7.Our students agreed to take part in the competition enthusiastically. A. denied B. refused C. volunteered D. enjoyed Mark letter A, B, C, or D to indicate the correct word or phrase to complete each of the sentences 8.They are talking about the prevention of _______________ resources. A. nature.B. natural C. naturally D. naturalizing. 9.We ______ a strange object in the sky when we ______ down the hill. A. saw / were driving C. had seen / drove B. saw / drove D. were seeing / were driving 10. Internet has ________developed and become part of our everyday life. A. increasing B. increasing C. increasingly D. increased 11.Mary: Let me congratulate you on your nomination in the competition, Peter! Peter: _________________, Mary. A. Not at all B. You are welcome C. I am sorry I can’t D. It’s kind of you to say so Make letter A, B, C or D to indicate the part that is incorrect. 12.Mrs Lan, with her husband, have gone to Sapa recently. .A. have B. to C with D. recently 13. The person whom helped you on the bus is my brother A. helped B. whom C brother D on the bus Read the following passage and mark letter A, B, C, or D to indicate the correct word that best completes Television is one of the man’s most important means of (14)_______. It brings events and sounds to the world into millions of homes. A person with a television set can sit in his house and watch the President (15)_____ is making a speech or visit a foreign country. He can see a war being fought and watch statesmen try to bring about peace. Through television, home viewers can see and learn about people, places, and things all over the world. It brings them coverage of America’s astronauts as the astronauts explore outer space. (16)________to all these things, television brings its viewers a steady stream of programs that are made to entertain. In fact, TV provides many entertainment programs than any other kind. The programs include action-packed dramas, sporting events and motion pictures. 14. A. communicate B. communication C. communicates D. to communicate 15. A. who B. which C. whom D. whose 16. A. On addition B. At addition C. In addition D. With addition

làm ko hết thì đừng trl mà trl r thì tôi báo đấy nhá Choose the correct answer to complete each of the following sentences 1. - Daisy: "What a lovely house you have!" - Mary: "______." A. Lovely, I think so B. Thank you. Hope you will drop in C. Of course not, it's not costly D. No problem 2. Analysts suggested the country __________its infrastructure to get foreign investment. A. improve B. to improve C. improves D. improving 3. The children __________to the zoo. A. were enjoyed taken B. were enjoyed taking C. enjoyed being taken D. enjoyed taking 4. _______ my friends were unsuccessful at the job interviews. A. Most B. The most of C. Most of D. Most out of 5. _______ hard it is, we'll finish solving it before you come back. A. No matter what B. How far C. No matter how D. Whichever 6. It was clear that the young couple were _______ of taking charge of the restaurant. A. responsible B. reliable C. capable D. able 7. _______ he loved her, he didn't forgive her for what she had done. A. Much as B. Because C. No matter D. However 8. _______ for the intolerable heat in the hall, we would have stayed much longer. A. If it weren't B. Unless it were C. Hadn't it been D. Had it not been 9. Last year, Matt earned..........................his brother A. twice as much as B. twice as many as C. twice more than D. twice as more as 10. Rarely...........about the environment enough to give up their cars A. do people care B. are people care C. people are care D. care people 11. Tom always.............the crossword in the paper before breakfast A. makes B. writes C. does D. works 12. I do not mind your using my bike.................you take care of it A. although B. for the fear that C. provided that D. unless 13. What time are you _______ duty? Let's have a coffee after that. A. over B. on C. off D. out of 14. Don't give up your harboring dream. _______ working harder and harder. A. Try out B. Keep on C. Speed up D. Go off 15. It's been a good year. I've written two books and a couple of articles, and _______ are now in print. A. both of which B. both of them C. all of which D. all of them 16. The meal Mary cooked tastes_______. A. well B. badly C. good D. worse 17. ______ at the party, we saw Ruth standing alone. A. Arriving B. We arrived C. Arrived D. We were arriving 18. He was turned down for the job because he is ________. A. qualified B. qualifying C. unqualified D. qualification 19. Everyone hopes to pass the next final exam,___________? A.doesn't he B. hasn't he C. haven't they D. don't they 20. _______ had booked in advance were allowed in. A. Only who B. Only those who C. Only who were those D. Only were those who 21. They hardly believe him and ................ A. so do I B. neither do I C. I do, too D. I believe him 22. The house was .............building. A. a stone nice old B. a nice old stone C. a nice stone old D. an old nice stone 23. At the moment she's considering ________ a car. A. buying B. to buy C. to buying D. buy 24. She.................her neighbor's children for the broken window A. accused B. complained C. blamed D. denied 25. I don't think we have very much......................., we are very different people A. together B. in common C. the same D. similar

Các số tự nhiên từ 1 tới 30 được viết liền nhau theo thứ tự từ lớn đến bé để tạo thành số: 1 ; 2 ; 3 ; 4 ; .......28 ; 29 ; 30 Tìm số dư của số trên khi chia cho 13.

Write a paragraph that raises the issue "Benefits of learning. What is learning for?" (about 9-10 sentences)