Các pác giúp em giải thik câu 5 và bài II cái, Câu 5 các bác xác định cho em là u ngắn hay u dài. Nhannnh

giúp mình đi các bạn ơi cần gấp

Chứng minh rằng tích 4 số nguyên liên tiếp cộng với 1 là số chính phương

Hòa tan 3,2 gam oxit của một kim loại hóa trị x bằng 200 gam dung dịch H2SO4 loãng. Khi thêm vào hỗn hợp sau phản ứng một lượng CaCO3 vừa đủ thấy thoát ra 0,224 dm3 CO2 (đktc), sau đó cô cạn dung dịch thu được 9,36 gam muối khan. Xác định oxit kim loại trên và nồng độ % H2SO4 đã dùng.

help nhanhhhhhhhhhhhhhhhhhhhhhhh

10. Have you received your salary yet? (paid) 11.My parents made me study everynight. ( was) 12. Sue went shopping so she could buy herself a new television (to buy) 13.You use this to open wine bottle This.......( for 14.Harry left early because I didn’t want to miss the bus ( so as) 15.I saved up some money to buy a motorbike. (could) 16. Jane gave upsmoking because she wanted to save money (order) 17.I came here so that I could see you. ( to) 18.Use this money to buy the tickets.(for)

1. Fiona wanted to know the time (what) 2. We won't go out if the weather is bad. (unless) 3. I would like you to be here (wish) 4. If I were you I'd try to get some sleep. ( advise) 5. What a pity we didn’t see the match! ( wish) 6. The police inspector said I had killed Mrs Brown ( accused) 7. Is somebody serving you? ( being) 8. The painters painted our house last month. ( had) 9. Someone will meet you at the airport. (be)

Ai chỉ mình với cảm ơn rất nhiều

1. A lot of people told us that you were the winner of the City Olympic Prize in the competition last year. 2. Someone informed me that our manager is going to change the supplier. 3. The supervisor announced that the workshop was delayed about 2 months because of Covid-19. 4. The scientists discovered that this plant was grown in South Asia. 5. The director promises that the show will start on time. 6. John recommends that everyone should travel in HongKong in this summer vacation. 7. I believed my sister would pass the final exam. 8. People have persuaded me that they will join with me in the seminar. 9. They have decided that the company will travel to NewYork together next month. Moi cau lam` 2 caach'

.Using more or less 1. Eat……………………………...sweet food 2. Get………………………………...exercise. 3. Drink ………………………..………coffee. 4. Eat………………………..…..fast food. 5. Eat………………………..….fruit and vegetables. 6. Drink…………………….…water. 7. Smoke…………………….…….and give it up. 8. Relax……………………… 9. Worry……………………….…….about things. 10. Spend…………………………time on computer games