Cho phương trình x ² -(m-1)x -2m ²+m-1=0(x1,x2là 2 nghiệm của phương tình).Tìm GTNN,GTLN A=($\frac{x_{1} }{x_{2} }$)^2 + ($\frac{x_{2} }{x_{1} }$)^2 +6($\frac{x_{1}}{x_{2}}$ +$\frac{x_{2}}{x_{1}}$ )

•Các tiền bối giúp với ạ¥•¥ 78.4g hỗn hợp CuO và một oxit sắt được chia thành 2 phần bằng nhau Phần 1 khử hỗn hợp bằng CuO dư ở nhiệt độ cao rồi hòa tan sản phẩm bằng dung dịch H2 SO4 loãng dư thu được 12,8 gam chất rắn không tan Phần 2 hòa tan trong dung dịch HCL thấy vừa hết 43,80 g HCl biết các phản ứng xảy ra hoàn toàn •a) Viết cácphương trình phản ứng. Tính %m các chất trong hh ban đầu •b) Cho biết tên oxit sắt

1. If you………..…time, Will you write to me? A. have B. had C. have had D. has 2. I couldn’t go there at night if I…………..you. A. am B. was C. be D. were 3. If I……….….get a pole, I will go fishing. A. can B. could C. may D. might 4. If you had the chance, ………..….you go fishing? A. did B. may C. would D. do 5. If you ………....a choice, which country would you visit? A. have B. had C. have had D. will have 6. If I were in your place, I………...a trip to England. A. will make B. had made C. would make D. made 7. If you inherited a million pounds, what……….….with the money? A. are you going to do B. will you do C. would you do D. do you do 8. If it………….… tomorrow, we may postpone going. A. rains B. will rain C. shall rain D. raining 9. If I…….…, I will let you know . A. am staying B. will stay C. do stay D. would stay

Tính Vôn và Ampe ạ, em còn có 30 điểm mong mn giúp

Làm hộ mình 2 bài này đi , hứa vote 5⭐

37-25:(2x+1)=32 65-45:(20-3x)=74 37+3.(10-2x)=55 4x+3.(x+2)+2.(x-5)=55

Tìm STN n biết 2n + 1 chia hết cho n - 1 Giải chi tiết giúp minh , Kamsa <3

help me !!!!!!!!!!!!!!!!!!!!!! help help !!!!!!!!!!!

II. Give the correct form of the verbs. 1.Nam often (go) ____________________ to school by bike every day. 2. A lot of people ( go) ____________________ to work by car. 3. John usually ( take ) ____________________ the bus to school. 4. He ( play ) ____________________ volleyball but he ( not enjoy ) __________________ it . 5. I enjoy (play)____________________ .. football with my friends. 6. I (go)....................................... swimming with you tomorrow. 7. They hate (paint)..................... but they like (swim)............................... 8. I think I (move) .............................to the city next year. 9. My sister likes (cook) ...................very much. She can cook many good foods. 10. Every year, my mother (give)................... me a nice doll on my birthday.. 11. My hobby is (collect)....................... stamps 12. What you (do)............................... in your free time? 13. Hoa (continue)................................... this hobby in the future. 14. I enjoy (fish) _______________________ because it (be) _________________relaxing. 15. Jane will play chess after she (finish) _______________________school. 16. What __________________your mother often (do) __________________ at weekends? 17. I think, in the future people (not play) _______________________ individual games. 18. We find (arrange) ___________ flowers interesting because it (help) ___________us relax. 19. I (not collect) ______________________dolls when I grow up. 20. We (go) ____________________to that village to do volunteer work last week 21. My uncle (move) ____________________to Da Lat in 2005. 22. My parents (buy) ____________________this house 20 years ago. 23. We (not take) ____________________photos when we came there . 24. The students ( not be) ___________________at school on last Monday. 25. Lan (be ) ____________________at home when we went out. 26. My father (not play) _________________any sport since last year.

`x+54+(-7^(2))-(-2x)^(2):x` Rút gọn hộ ạ :)