user-avatar
vuongnhat
2 năm trước
a, Tìm x, y biết: x^2 + y^2 +1 = xy - x-y b, Cho x-y=7. Tính giá trị của biểu thức: A= x^2 (x+1) - y^2 (y-1) +xy - 3xy (x-y+1)- 95
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

4. For each question, complete the second sentence so that it means the same as the first. Use the word in brackets. You may need to change the word. Write NO MORE THAN THREE WORDS. Here is an example. 0. The bookshop is opposite the library. ____________________ a bookshop opposite the library. (THERE) Answer: 0. There is 1. It is less convenient to live in the suburbs than in the city centre. Life is in the city centre than in the suburbs. (MORE) 2. His neighbourhood is much more polluted than my neighbourhood. My neighbourhood is than his. (LESS) 3. There are more high buildings in your city than in my city. Your city is _______________________ than my city. (MODERN) 4. We have nothing to do here. In London, we have many outdoor activities. We have life in London than here. (INTERESTING) 5. I like my village most because others are not as peaceful. My village is _________________________ than any other villages. (MORE) Trả lời nhanh giúp mk nhé !!!

2018 © Loga - Không Ngừng Sáng Tạo - Bùng Cháy Đam Mê
Loga Team