A. bc(b+c)+ca(c-a)-ab(a+b) B. x^2-x+y^2-y Mn giúp mình 2 câu này vs ạ Cảm ơn ạ

Dịch sang tiếng anh: Máy tính là một công cụ cá nhân giúp chúng ta làm việc, học tập và giải trí. Nhưng nếu sử dụng máy tính như một sở thích có thể mang lại cả ảnh hưởng tốt và xấu Yc: CẤM gu gồ dịch, đừng dịch pro quá

Viết đoạn văn cho đề sau : Phải chăng chỉ có những điều ngọt ngào mới làm nên yêu thương

1. George wouldn't have met Mary to his brother's graduation party. A. if he has not gone B. had not he gone C. had he not gone D. if he shouldn't have gone 2. ten minutes earlier, you would have got a better seat. A. Were you arrived B. If you arrived C. If you hadn't arrived D. Had you arrived 3. If she a car, she would go out in the evening. A. have B„ has C. has had D. had 4. Without your help, I the technical problem with my computer the other day. A. can't solve B. couldn't have solved C. Couldn't solve D. Weren't solved 5. The joke would not be funny if it into French. A. has been translated B. be translated C. was be translated D. were translated 6. We on the beach now if we hadn't missed the plane A. might have lain B. would lie C. could be lying D. would have lain 7. I think you should stop smoking. A. If I am you, I will stop smoking. B. If I had been you, I would stop smoking, C. If I were you, I would stop smoking. D. If I were you, I will stop smoking. 8. If he had been more careful, he A. won't fall B. wouldn't fall C. wouldn't have fallen D. would haven't fallen 9. His health would be improved A. if he continued to smoke heavily B. unless he stopped smoking heavily C. if he gave up smoking D. if only he doesn't smoke any more. 10. He was driving very fast because he didn't know the road was icy. A. If he knew the road was icy, he wouldn't drive so fast. B. He hadn't been driving very fast if he would have known the road was icy. C. If he had known the road was icy, he wouldn't have been driving so fast. D. He wasn't driving very fast if he would know the road was icy.

Giải hộ mình với , hứa vote 5*, mình đang cần gấp ạ

Các câu hỏi: - Có bao nhiêu đoạn thẳng ? - Có bao nhiêu tia gốc A ? - có bao nhiêu tia gốc B ? - Có tia nào đối nhau ko ? - Có tia nào trùng nhau ko ? Giải giúp mik ạ

V. Choose the correct answers to complete the passage. Tokyo is Japan’s capital and largest city. It’s also one of the largest cities in the world.(1) in 1457, Tokyo has grown into a major part of a (2) region that also includes the cities of Yokohama and Kawasaki. The metropolitan region, also known as Greater Tokyo, has over 30 million residents, (3) makes it one of the largest metropolitan areas in the world. Tokyo today is a very welcoming metropolis. Tourists (4) about the street, taking in Japanese culture. Hundreds of shrines and temples adorn the city. Shinto and Buddhism are the major (5) of Japan. Tourists can also experience Japanese cuisine. There are thousands of restaurants (6) Tokyo. You can choose from noodle shops, sushi bars, or even McDonald’s with special Japan-(7) items found only in Japan. If you ever have the chance to visit Japan, make sure you stop in Tokyo for (8) a few days. 1. a. Found b. Founded c. Founding d. Finded 2. a. metropolitan b. influence c. attractive d. complex 3. a. what b. which c. that d. this 4. a. run b. show c. drive d. roam 5. a. provinces b. attractions c. festivals d. religions 6. a. at b. in c. on d. of 7. a. inspire b. inspiring c. inspired d. inspiration 8. a. at time b. at all c. at least d. at first nhớ giải thích ạ

`1/2 × √64 - √4/25 +` $1^{2021}$

Bài 1 : Cho 20 ml dung dịch AgNO3 1M (D = 1,1g/ml ) vào 150 ml dung dịch HCl 0,5M (D = 1,05g/ml). Tính C% Và Cm của các chất tan trong dung dịch sau phản ứng Bài 2 : A là hợp chất của cacbon và hidro trong đó hidro chiếm 20% về khối lượng a/ Tìm CTHH của A biết 1g A ở đktc có thể tích là 746,67ml b/ Trong 0,5 mol A có bao nhiêu nguyên tử cacbon c/ Muốn có 9.10^22 nguyên tử hidro cần lấy mấy gam A

Cho `a , b , c > 0`. Chứng minh : `a^3 + b^3 + abc >= ab(a+b+c)`