giúp mik với hứa sẽ cho 5 sao mik cần gấp

GIÚP VỚI !!!!! Bài 1: (6.0 điểm). Cho đa thức B = 4x2y– 7xy2 + 6x2y – 10 x2y + 5x3y2. a) Thu gọn đa thức B. b) Tìm bậc của đa thức B. c) Tính giá trị của đa thức B tại x = 2 , y = -3.

giúp mình câu b) và d) thôi là được rồi cám ơn các bạn nhiều

Hãy kể tên các phong tục tập quán từ thời bắc thuộc được lưu truyền đến ngày nay ? Và hãy giải thích vì sao nhân dân ta vẫn lưu giữ được.

* Tóm tắt diễn biến chính của chiến tranh

We are all .....................about our final exam. * 1 điểm worried worries worry to worry That man sometimes drives.......................... * 1 điểm careful slow carelessly easy She always helps her mother. She's really......to her mother. * 1 điểm difficult strange helpful hard Last week, Jane and her friends had a medical_____________at school. * 1 điểm record check-up rooms form It' s .............to brush your teeth regularly. * 1 điểm worried important clean painful “How tall are you?” means “______________” * 1 điểm What is your name? What is your weight? What is your age? What is your height? Ken was absent from class because of his_______________. * 1 điểm tired late sickness sick What is the ________________of Mount Everest? * 1 điểm long height heavy tall He plays soccer well. * 1 điểm He is a soccer player. He is a good soccer player. He is a good soccer. He is good soccer player. My aunt and uncle take care of people’s teeth. They are______________. * 1 điểm nurses teachers doctors dentists __________heavy is that suitcase? - It’s 4 kilos. * 1 điểm Why What When How Most children are scared..............seeing the dentist. * 1 điểm of in on for .................do you clean your room? - Three times a week. * 1 điểm When What How often Why She looks tired. What's the .......with her? * 1 điểm happen feel wrong matter Remember .......at home for our safe on these days. * 1 điểm Hình ảnh không có chú thích to stay staying stays stayed Sorry, Jimmy! I have a(n)........................with my doctor tomorrow. * 1 điểm activity appointment occasion opportunity “What is your age?” is _____________________ * 1 điểm How heavy are you? How are you? How old are you? How tall are you? You should wash regularly to ensure personal ............. * 1 điểm careful hygiene hair health Don’t eat too___________candy because it’s bad for your teeth. * 1 điểm many more much less The students are so studious. * 1 điểm What studious a student! What students studious! What a studious students! What studious students!

trong văn bản hịch tướng sĩ tác giả trần quốc có viết : "ta thường tới bứa quên ăn , nửa đem vỗ gối ; ruột đau như cắt , nước mắt đầm đìa ;chỉ căm tức chưa xả thịt lột da , nuốt gan nuốt máu quân thù.Dẫn cho trăm thân này phơi ngoài nội cỏ , nghì xác này gói trong da ngựa , ta cũng vui lòng" a,mỗi câu được trình bày với mục đích nói nào? b,viết đoạn văn diễn dịch khoảng 6-8 câu trình bày cảm nhận cuả em về tâm trạng của trần quốc tuấn qua đoạn trích trên?

Giải bất phương trình: $\sqrt{1+x}$ $+$ $\sqrt{1-x}$ $\leq$ $2$ $-$ $\frac{x^2}{4}$

1. I want you to send this letter for me. => Would you mind _________________________________ 2. The taxi broke down.The taxi was taking us to the airport. => The taxi _________________________________ 3. The window has been repaired. It was broken last night. => The window_________________________________ 4. Can I use your cellphone? => Do you mind_________________________________ 5. Shall I carry your luggage? =>Would you mind_________________________________ Bạn TIB nha

GẤP!!!!! 1. If I had known she was sick, I would have visited her. => Had 2. If the train had been delayed, I would have sent the telegram. => Had…………………………………………………………………… 3. The only reason the party was a success was that a famous film star attended. => Had it not………………………………………………………………… 4. The only thing that prevented the passing of the bill was the death of the Prime Minister. => Had it not………………………………………………………………… 7. Please let me know if you wish to keep the books any longer. => Should you wish to keep the book any longer,please lt me know 8. If I were the Prime Minister, I would reduce taxes. => Were It the Prime Minister, i would reduce taxes 9. If Marry had given it in on time, she would have got a high mark. => Had………………………….......………………………………………… 10. If John had played for our football team, we would not have lost the game. => Unless……………………………………………………………………… 11. If I won a big prize in a lottery, I’d give up my job. => Unless………………………………………………………………………. 12. If you don’t like this one, I’ll bring you another. => Unless………………………………………………………………………. 13. I’ll only help you if you promise to try harder. => Unless……………………………………………………………………… 14. With a bit more help, I would have finished it on time. => If ................................................................................................................... 15. Without the help of the Red Cross doctors, many more would have died. => If …………......…………………………………………………………… 16. If the train arrives on time, they’ll be here in a few minutes. => Assuming ........…………………………………………………………… 17. You can go out tonight if you get back by midnight. => So long as …………......…………………………………………………. 18. If you had a lot of money, do you think you would give up work? => Supposing …………......…………………………………………………… 19. If Rosie gets this new promotion, we’ll have enough money for a holiday. => Provided …......…………………………………………………………… 20. Mr David will give a talk at the conference if we pay him a reasonable fee. => On ..................................................................................................................