Bài 2. Cho biểu thức P = (x-1/x+1 - x/x-1 - 3x+1/1-x ² ) : 2x+1/x ²-1 a) Rút gọn P; b) Tìm các giá trị của x để P = 3/x-1 c) Tìm các giá trị nguyên của x để A > 1

Mn ơi giúp e vs ạ Mai e pk nộp r

Read the following passage and choose the item (a, b, c, or d) that best answers each of the questions about it. This large flat is on the top floor of a five-story modern block of flats in a quiet part of the country. There are two schools, a restaurant, and several shops nearby. Wetton Station is only a few hundred meters away. The flat has got a large living-room, a dining-room, a modern kitchen, a large bedroom and two small bedrooms. There is a bathroom with shower, sink and toilet. The flat has also got a small storeroom, and there is a large verandah. The price is £44,590, including carpets. five-story (adj): năm tầng verandah (n): hiên, hành lang 27. The flat is on the _____ floor of a modern block of flats. a. third b. second c. fifth d. sixth 28. The flat has ______ rooms altogether. a. 6 b. 7 c. 8 d. 9 29. Is there a railway station near the flat? a. Yes. There are two railway stations near the flat. b. Yes. There is a railway station near the flat. c. No. There isn't any railway station near the flat. d. no information 30. What does the authortry to do? a. He tries to buy a large flat. b. He tries to sell a large flat. c. He tries to rent a large flat. d. He tries to find a large flat. 31. Which of the following is not true? a. There are two schools near the flat. b. The modern block of flats has five floors. c. The flat is beautiful but the neighborhood is noisy. d. The flat has a large verandah.

Một nhà kho có 5,7 tấn hàng. Lần đầu chở được 2/7 số hàng bằng các ô tô , mỗi ô tô chở được 1,7 tấn hàng . Hỏi lần sau cần bao nhiêu ô tô cùng loại để chở số hàng còn lại

Vì sao Của,PbS,FeS đều không tan trong nước nhưng không điều chế được FeS bằng cách sục khí H2S với dung dịch muối sắt II sunfua

I.Circle the best answer (A, B, C or D) to complete these sentences. 1. Walking to school will help ……………… air pollution. A. reduce B. reuse C. recycle D. refill 2. My sister ……………… home for school yet. A. didn’t leave B. hasn’t left C. don’t leave D. isn’t leaving 3. Amsterdam is one of the ……………… cities in the world. A. peacefulest B. peacefuler C. most peaceful D. more peaceful 4. ………………the film is late, I will wait to watch it. A. Because B. When C. But D. Although 5. My father first ……………… Da Lat in 2010. A. visited B. went C. go D. been 6. If the weather……………… good, I ………………. camping with classmates. A. is/ will go B. is/ go C. will be/ go D. will be/ will go 7. Which one is different? A. boxing B. cycling C. telling D. skiiing 8. Find the word which has a different sound in the part underlined. A. brother B. these C. thought D. clothes *Choose A;B;C orD that has a different sound from the others in the part underlined 9. A. cycling B. really C. ready D. baby 10. A. natural B. arrive C. plastic D. bath * Find and circle the mistake in the sentence below (Tìm và khoanh tròn lỗi sai) 11. If Tran will have a lot of money, she will buy a new electric bike. A B C D 12. The wireless TV can help me surf the internet and contact friends by the world. A B C D II. Reading (2.5 ms) A. Choose the correct answer A, B, C or D to complete the passage. (1.0 m) People need to breathe. If they don’t breathe, they (1) ____________ die. But how clean is the air people breathe? If they breathe (2) ___________ air, they will have breathing problems. Plants and animals need (3) __________ air too. A lot of the things in our lives create harmful gases and (4) _________the air dirty, like cars, motorbikes, and factories. Dirty air is called (5) …………. air. Air pollution can also make our Earth warmer. 1. A. won’t B. are C. must D. will 2. A. clean B. fresh C. dirty D. cleaner 3. A. clean B. safe C. dirty D. polluted 4. A. make B. get C. give D. made 5. A. pollution B. pollute C. unpolluting D. polluted B. Read the following passage and answer the questions. (1.0m) There are two main kinds of sports: team sports and individual sports. Team sports are such sports as baseball, basketball and volleyball. Team sports require two separate teams. The teams play against each other. They compete against each other because they want to get the best score. For example, in a football game, if team A scores 4 goals and team B scores 3 goals, team A wins the game. Team sports are sometimes called competitive sports. 1. Are there three main kinds of sports? -> …………………………………………………………………………………….. 2. How many teams do team sports require? -> …………………………………………………………………………………….. 3. Why do two separate teams compete against each other? -> …………………………………………………………………………………….. 4. Are team sports sometimes called competitive sports? -> …………………………………………………………………………………….. 5. What type of sports do you like most? -> …………………………………………………………………………………….. III. Rewrite these sentences as directed in the brackets. (1.0m) 1. I had a bad cold, so I didn’t go to school yesterday. (Rewrite this sentence with “because”) -> …………………………………………………………………………………….. 2. We make the air dirty because we use the car all the time. (Rewrite this sentence with “If”) -> …………………………………………………………………………………….. 3. most/ London/ tea/ is/ popular/ the/ drink/ in. (Rearrange the words to make a sentence) -> …………………………………………………………………………………….. Hỡi những con người giỏi Anh giúp mik nhá Hứa vote 5*

đỀ BÀI: trong những ngày cả đất nước chống dịch Covid-19 từ trong sâu thẳm chúng ta vẫn cảm nhận được nét đẹp mùa xuân Hà nội đang lặng lẽ trôi qua Viết 1 đoạn văn khoảng 12 câu (trong đoạn văn có sử dụng phép so sánh

Pháp luật quy định các mức thuế khác nhau đối với các ngành nghề các lỉnh vực và

Câu 2: (2 điểm) Chu vi của một thửa ruộng hình chữ nhật là 240 m. Chiều rộng kém chiều dài 20 m. Tính diện tích thửa ruộng đó. Câu 3: (1 điểm) Con kém mẹ 24 tuổi. Năm nay tuổi con bằng 1/5 tuổi mẹ. Hỏi năm nay con bao nhiêu tuổi, mẹ bao nhiêu tuổi ?

Bai 3 bài 3 khi đốt khí metan CH4 khí axetilen C2 H2 rượu etylic c 2 H 6 o đều cho sản phẩm là khí cacbonic và hơi nước Hãy viết phương trình hóa học phản ứng cháy của các phản ứng trên