`x+y+z=1` `x^2+y^2+z^2=2` `x^3+y^3+z^3=3` `x^5+y^5+z^5=?`

Giúp mk nhé. Mk cảm ơn nhiều 🙏🙏🙏

2KOH + ZnSO4 → Zn(OH)2 + K2SO4 Thuộc phản ứng gì?

Câu hỏi : Đặt 2 câu chỉ cặp quan hệ từ điều kiện-kết quả ( mỗi câu dùng một cặp khác nhau )

vẽ chibi/ đạu mầm/...... NL : mn nghĩ tui như nào nhỉ '^'

Viết đoạn văn nghị luận về tình hình dịch bệnh và chống dịch của nước ta hiện nay (10-15 câu )

Ex4. Choose the correct answers. 1. ‘There was an accident outside the supermarket.’ A. He said there had been an accident outside the supermarket. B. He said there was an accident outside the supermarket. C. He said there has been an accident outside the supermarket. 2. ‘Have you ever seen a UFO?’ A. Jim wanted to know if had I ever seen a UFO. B. Jim asked if I had ever seen a UFO. C. Jim asked whether I ever saw a UFO. 3. She asked if you’d seen her painting on display in the exhibit. A. ‘Will you see my painting on display in the exhibit?’ B. ‘Did you see my painting on display in the exhibit?’ C. ‘Have you seen her painting on display in the exhibit?’ 4. I’m flying to India tomorrow.’ A. Yesterday, Matt said that he was flying to India tomorrow. B. Yesterday, Matt told me that I was flying to India the next day. C. Yesterday, Matt said that he was flying to India the following day. 5. ‘Why did you go out last night?’ A. She asked me why I had gone out the night before. B. She asked me why did I go out the previous night. C. She wanted to know why I went out that night. 6. My instructor said that we were the best class he’d ever taught. A. ‘You are the best class I’ve ever taught,’ my instructor said. B. ‘You were the best class I ever taught/ my instructor said to me. C. ‘They are the best class he’s ever taught,’ said my instructor. 7. ‘Can you help me with my homework?’ A. Nick asked whether his sister can help him with his homework. B. Nick asked his sister could she help him with his homework. C. Nick asked his sister if she could help him with his homework. 8. Bill wanted to know when Susan was going out with Tony. A. ‘When you are going out with Tony, Susan?’ B. ‘When was you going out with Tony, Susan?’ C. ‘When are you going out with Tony, Susan?’ 9. ‘I will come if I can finish work early.’ A. He said that he will come if he can finish work early. B. He told that he would come if he could finish work early. C. He told me that he would come if he could finish work early. 10. ‘What is the closest planet to Earth?’ A. The student wondered if the closest planet to Earth is. B. The student asked what the closest planet to Earth was. C. The student asked what was the closest planet to Earth.

Viết 1 đoạn văn khoảng 8 đến 10 câu chủ đề tự chọn có sử dụng câu đặc biệt và câu chủ động ( gạch chân ) .

Complete the reported yes/ no questions. 1. ‘May I ask you a few questions?’ The woman asked John_______________________________________________ 2. ‘Have you done your project about space exploration?’ The teacher asked me________________________________________________ 3. ‘Will we be able to live on Mars in 2050?’ Debbie asked her father_______________________________________________ 4. ‘Are you having a barbecue tonight?’ I asked the Browns___________________________________________________ 5. ‘Do you like sci-fi films that feature extraterrestrial life?’ Jane asked Tom_____________________________________________________ 6. ‘Did scientists find life on Mars many years ago?’ Val asked me_______________________________________________________ 7. ‘Are aliens or UFOs real?’ Many people wondered_______________________________________________ 8. ‘Can we go to the National Museum tomorrow?’ Sally asked her best friend_____________________________________________ 9. ‘Do you know NASA has found two new planets?’ Duc asked Trang_____________________________________________________ 10. ‘Were you here yesterday?’ She wanted to know__________________________________________________

Cho các đa thức : f(x) = x^3 - 2x^2 + 3x+1 g(x) = x^3 + x - 1 h(x) = 2x^2 - 1 a, Tìm A(x) = 2f(x) + g(x) b,Tìm B (x) biết 2B(x) + f(x) = h(x) c,C(x) = 2g(x) = 3h(x)