Nội dung từng chương của văn bản những ngày thơ ấu

Viết lại biểu thức dưới dạng bình phương,lập phương hoặc tích các thừa số a) 3x^3 + 9x^2 + 9x + 3 b) x^2y^2 - z^2 c) 4x^2 + 12xy + 9y^2 d) ( x + y )^3 - ( x - y )^3

Cho hình thang cân ABCD (CD là đáy lớn). Kẻ các đường cao AE, BF của hình thang. Chứng minh rằng DE = CF. giúp em bài 1 này với ạ

Giúp em bài này với ạ, em cần gấp

Khử hoàn toàn 4,64 gam một oxit kim loại bằng CO dư ở nhiệt độ cao, thu được kim loại M. Dẫn toàn bộ khí sinh ra vào bình đựng dung dịch Ca(OH)2 thu được 4 gam kết tủa và dung dịch X. Đun nóng dung dịch X lại thu thêm được 2 gam kết tủa nữa. Mặt khác, lấy lượng kim loại sinh ra hòa tan hết vào dung dịch HCl dư, thu được 1,344 lít khí H2 (đktc). Tìm công thức của oxit kim loại. làm hộ mình với, mình cần gấp ạ

Vẽ sơ đồ tư duy vật lý chương 4 mn giúp em với em cần gấp ạ

Cho hình thang cân ABCD (AB // CD). a) Chứng minh rằng ACD = BDC b) Gọi E là giao điểm của AC và BD. Chứng minh rằng EA = EB. ai giúp em với ạ vd3 ạaaa

Calli :"Ngữ Văn❤" NL : Thích nhưng lười =))

2. Cho 2,3 gam Na vào 100 gam dung dịch NaOH 10%. Tính nồng độ phần trăm và nổng độ mol/lit của dung dịch mới. Biết khối lượng riêng của dung dịch mới là 1,05 g/ml. Can giup a............................

28. "Can you use a computer?" she asked a. She wanted to know whether I can use a computer. b. She wanted to know whether I could use a computer. c. She wanted to know could I use a computer. d. She wanted to know can I use a computer. 29. "Do you plan to stay for a while?" he asked a. He asked me if I plan to stay for a while. b. He asked me if I planned to stay for a while. c. He asked me did I plan to stay for a while. d. He asked me do you plan to stay for a while. 30. "Can you lend me some money?" a. He asked me can you lend him some money b. He asked me could you lend him some money c. He asked me if I can lend him some money d. He asked me if I could lend him some money 31. She asked, "Will you go to night?" a. She asked me if I will go that night. b. She asked me if I would go that night. c. She asked me if will I go night. b. She asked me would I go that night. 32. His friend said to Peter "I'm sad. Let me alone". a. His friend said that I am sad and let me alone. b. His friend said that I was sad and let me alone. c. His friend said that he was sad and told Peter to let him alone. d. His friend said that he was sad and if Peter let him alone. 33. "What does she like?" he asked me a. He asked me what she likes. b. He asked me what she liked. c. He asked me what do I like. d. He asked me what did I liked. Ex 2. Change the following sentences into reported speech 1. Nam said “I am told to be at school before 7 o’clock” 2. Thu said “All the students will have a meeting next week” 3. Phong said “My parents are very proud of my good marks” 4. The teacher said “All the homework must be done carefully” 5. Her father said to her “You can go to the movie with your friend” 6. Hoa said “I may visit my parents in the summer” 7. The teacher said “We can collect old book for the poor students” 8. She said “She doesn’t buy this book” 9. The boys said “We have to try our best to win the match” 10. Her classmate said “Lan is the most intelligent girl in our class” 11. “Do you enjoy reading?” Phong asked Peter 12. “Does she like sports?” Hoa asked Lan 13. “Do your sister and brother go to the same school?” She asked Nam 14. “Are there some oranges in the fridge?” She asked her mom 15. “Will it rain tomorrow morning?” He asked his friend 16. “Did you go to Hue three years ago?” Tam asked Peter 17. “Where does your father work?” The teacher asked me 18. “How many people are there in your family?” She asked Lan 19. “How do you go to the airport?” His friend asked him 20. “When will your father leave Vietnam for the USA?” Phong asked me #giúp e vs