Giúp mk vs ạ càng nhanh càng tốt ạ . Cảm ơn mọi người nhiều

Cho a = -20 ; b-c = -5, hãy tìm A biết A^2 = b(a-c) - c( a-b) giúp mk với ạ, mk gấp lắm !

Bài 40 SGK tr125 Mục 1 bạn nào làm jup mk vs

điên tích hình tron có duong kinh 4/5

Viết đoạn văn giới thiệu về tác giả chính hữu và bài đồng chí

V. Combine the following sentences using an appropriate relative clause. 1. My head teacher has such a good sense of humour. He usually makes everyone laugh by telling funny stories. ________________________________________________________ 2. I prefer traditional classrooms. I can interact face to face with the teachers and other students there. ________________________________________________________ 3. We are going to open a new English class. This class is totally online. ________________________________________________________ 4. Mr. Vinh is talking with the students. They are sharing their thoughts about the roles of schools in the future. ________________________________________________________ 5. My new school is bigger than the old one. You visited it two days ago. ________________________________________________________ 6. Dr. Anna Bennett is a senior lecturer at the National University. Her paper is about women’s roles in the 21st century. ________________________________________________________ 7. My brother has just graduated from Harvard University. Mark Zuckerberg, Facebook founder and CEO used to study there. ________________________________________________________ 8. Her husband will stay at home to look after the children. He used to be the breadwinner of her family. ________________________________________________________ 9. I have read an article about Silicon Valley. It is home to many of the world’s largest high-tech corporations. ________________________________________________________ 10. They will organise a farewell party for Ms. Jennifer Green next week. She has been our school principal for 8 years. ________________________________________________________X. Use the words given and other words, complete the second sentence so that it has a similar meaning to the first sentence. Do not change the word given. (Use 2 – 5 words in total). 1. My school is over 100 years old. which I’m studying ________________________ over 100 years old. 2. Students will share their thoughts about the dream school on the forum, on Students’ thoughts about the dream school ________________________the forum. 3. Ms. Kelly, our school principal, will attend our class this afternoon, is Ms. Kelly, ___________________________ , will attend our class this afternoon. 4. Homework will be sent through cyberspace, through Students _______________________ cyberspace. 5. The teacher meeting you yesterday is supervising our project, who The teacher ____________________________ is supervising our project.

Viết đoạn văn: Hãy học cách ứng xử của những dòng sông khi gặp ngọn núi, nó đi đường vòng

hãy viết 1 đoạn văn (đề tài tự chọn ) .trong đó có sử dụng ít nhất 1 câu rút gọn và cho biết thành phần được rút gọn là thành phần gì ?

am giác ABC có AB<AC. Gọi D là trung điểm của BC. So sánh các độ dài BD, DC

Chia các động từ sau ở bị động : 1.Before we arrived all the washing up ( do ) .... 2.Before she came a singer a lot of practice ( do ) by her .... 3.After the food (cook) , he served every one ... 4.They didn't want to go with us because that film ( see ) by them ... 5.A new hospital ( build ) before yesterday .... 6.No letters ( write ) before i arrived ... 7.After a film (make) . They show it in public .... 8.By the time my mother came home , the house ( clean ) .... Giúp mình với ạ :((((