bài 7:chứng tỏ đa thức sau không có nghiệm a) 10x^2 +3 b)(x-1)^2 + (x+2)^2 +5 c)x^2+ (y-2)^2 +0,2 Giúp mk với vote 5 saoo

Vẽ búp bê cầu nắng Digi ( ko paint ) Full màu

Cho câu chủ đề: Tình bạn thật cần thiết với mỗi người. Em hãy viết một đoạn văn (diễn dịch hoặc quy nạp) từ 7 đến 8 câu. Trong đó có sử dụng ít nhất một trợ từ, một thán từ (chỉ rõ trợ từ, thán từ đó).

mụi người giúp iem với :>>> mới học sang chương mới hong bít cách chình pày @@ làm mẫu hộ em nhaaa, chi tiết thì củm ơn nhìuuuuuuuu

Giúp mình làm với ạ, mình cảm ơn 16. Pick me up at 4 p.m. I _________ my bath by then. A. will have B. will be having C. will have had D. must have had 17. She said that she would be punctual for the opening speech, ________ she were late? A. but what if B. how about C. and what about D. so if 18. What are the main ________ of this illness? A. traces B. emblems C. tokens D. symptoms 19. We believe that these animals could be saved if our plan were ________. A. adopted B. taken up C. practised D. exploited 20. Local people are concerned about pollution from ________ oil wells. A. maritime B. sea-going C. off-shore D. coast line 21. The topic ________ at yesterday’s meeting was of great importance. A. to be discussed B. to have been discussed C. discussed D. having been discussed 22. Evidence came up _________ specific speech sounds are recognized by babies as young as 6 months old. A. what B. when C. which D. that 23. There have been protests from animal rights group about ________ on animals. A. experience B. experiments C. expiration D. trials 24. She couldn’t perform well once she was _________. A. under pressure B. out of mind C. in the mood D. over the moon 25. All the sales people I met always try to _________ buying their products. A. persuade me for B. force me to C. talk me into D. help me with 26. There was nothing special about his clothes________ from his flowery tie. A. but B. except C. other D. apart 27. She always________ the crossword in the paper before breakfast. A. makes B. writes C. does D. works 28. When the tenants failed to pay their bill, the authorities decided to cut________ the gas supply to the flat. A. down B. out C. across D. off 29. His parents agreed to ________ him their car while they were away on holiday. A. borrow B. lend C. hire D. let 30. We try to _________to see our parents at least twice a month. A. call up B. go up C. come on D. drop in 31. He has always looked _________ his elder brother. A. up to B. back on C. into D. up and down 32. ________ what most people say about him, Paul has a very good sense of humour. A. Opposite to B. Against C. Contrary to D. Opposing 33. They are happily married although, of course, they argue _________. A. most times B. from day to day C. every now and then D. on the occasion 34. The water company will have to ______ off water supply while repairs to the pipes carry out. A. cut B. take C. break D. set 35. We could make better ________ of our energy resources. A. spend B. use C. need D. limit

Tìm các giá trị của x để mỗi biểu thức sau có nghĩa: a) Căn 3x^2+1; b)Căn (x-3).(x-1) ; c)Căn x^2-4; d) Căn 2+x/5-x ; e) 1/căn 2x-x^2 { Giúp mik với ạ, mik cần gấp)

Giúp mik câu c với ạ ( trình bày đầy đủ càng tốt ạ)

Chuyển câu này sang cấu trúc in order to/ so as to giúp em với ạ (hứa cho CTLHN) Mary often goes home as soon as the class is over. She doesn't want her mother to wait for her.

Ví dụ 6: Một đoàn tàu nặng 20 tấn chuyển động đều trên đường nằm ngang .Lực ma sát cản lại chuyển động của tàu bằng 0,01 lần trọng lượng của tàu . biểu diễn lực kéo của đầu tàu tác dụng lên đoàn tàu. Tỉ xích 1cm ứng với 1000N

Ex4. Rewrite the sentences using the words given. 1. When they were younger, Tom and Mary lived in the same building. USED - When they 2. In the past, Tom had a bad relationship with his brother. GET ON - Tom and his brother 3. I have moved from Czech Republic to Britain. It is strange for me to drive on the left of the road. USED - I am trying to 4. I never had a birthday party because we were so poor. USE - I 5. We last spoke with him two days ago. SINCE - It 6. My brother started working as a private trainer in 2018. SINCE - My brother 7. I didn’t know Tom had been a policeman before he became a farmer. USED - I didn’t know that Tom 8. In the past I played tennis more often. USED - I don’t play