Cho hai đa thức: M(x) = x4 + 5x3 – x2 + x – 0,5 ; N(x) = 3x4 - 5x2 – x – 2,5 a)Tính M(x) + N(x) b)Tính M(x) – N(x)\ nhanh nha mn

Lý do trả lời nhiều nhưng điểm vẫn chưa đủ lên hạn :b . Chiều thi 2 môn cuối . Good luck. Viết tặng em chữ Good luck nhé ( bút highlight)

choose a word.write the correct word next to numbers 1-5: stamp; thanked; envelope; smelt; believed; corner; front; happened; hole. my name's Oliver. one day i was walking home when i saw a fire in the downstairs window of an enormous house. i went to the (1).................door and shouted loudly but nobody came. i had my phone with me so i phoned and told someone abouut the fire. after about five minutes, i heard the noise of an engine. then a fire engine with blue lights on the top came round the (2)...................very fast. it was a bit frightening. suddenly firefighters were running everywhere, throwing water on the fire. that was exciting! and soon everything was all right again. i went into the house with the firefighters. the kitchen was badly burnt and it (3)..................terrible but the other rooms in the house were fine. then a man appeared at the bottom of the stairs. i knew him! he was a famous singer but he was also the man who lived in the enormous house. he (4).....................me very much and asked me for my and address. then, two days later, a letter arrived for me. inside the (5)...................there were two tickets for a concert that the man was singing in. i thought that was amazing! (6) now choose the best name for the story. a. Oliver gets a lovely surprise b. Oliver explores an empty house c. Oliver chats to firefighters

1 . giải phương trình a) 2018x - 2019 = 0 b) ( 3x + 1 )² - 49 = 0 c) ( 3x + 2 ) ( 4x - 5 ) = 0 d) ( 2x - 2 )² = x² e) 3x - 5 = 0

Giúp mình với ạ!! Cho tam giác abc vuông tại a có đường cao ah(h thuộc bc) Cm:tam giác abh đồng dạng tam giác cba từ đó suy ra ab2=bh.bc B)cm:ah2=bh.ch C)cm:vẽ bi là phân giác của góc aBc (i thuộc ac) kẽ ck vuông góc bi (k thuộc bi) Cm: bi2=ab.bc-ai.ci

I.Choose the word or phrase that best completes each unfinished sentence below. 1. The facsimile_________by Alexander Bain in 1843. NỘI DUNG QUẢNG CÁO Mgid Mgid Huyết áp ổn định đến già. Bỏ 2 phút đọc rồi làm theo Gercoles Gold Cụ 120 tuổi từ Sơn La đã nói cách làm sạch mạch máu Gercoles Gold Hàng ngàn người đã tin dùng độ bảo mật tuyệt vời của FPT Camera FPT Camera Trong Nhà Covid 19 đã phải đầu hàng với những quốc gia này Herbeauty A. is invented . was invented C. invented D. has been invented 2. First, fry the onions , add the potatoes. A. than . then C. after D. before 3. He _________ a prize in the competition last week. A. win B. won C. was won D. has win 4. Who_________the company? A. goes B. walks C. jogs D. runs 5. _________is an instrument for making sounds louder. A. Loudspeaker B. Recorder C. Facsimile D. Radio 6. The doctor told me _________more fresh fruit. A. eat B. to eat C. eating D. ate 7. Can you repair my bike? A. use B. fix C. adjust D. A&B 8. Coffee was known in Europe _________‘Arabian wine’. A. as B. like C. the same D. unlike 9. The information _________ for future use. A. stores B. stored C. is stored D. are stored 10. I saw a_________ flying overhead. A. train B. helicopter C. conveyor belt D. coach 11. This beautiful picture_________ by Mary. A. is drawn B. is drew C. is draw D. is drawing 12. Don’t touch the paint! It’s still wet. A. do a job with something B. take something C. put your hand or finger on something D. put paint on something to change the color 13. I warned him_________ too close to the fire. A. not to go B. not going C. no going D. didn’t go 14. _________is a pen that has a very small ball at the end. A. Crayon B. Fountain pen C. Pencil D. Ball-point pen 15. Tobacco is taxed in most countries, along with alcohol. A. in the same way as something B. but not something C. for example D. including 16. James picked up the _________ and said “Hello”. A. vacuum B. printer C. telephone D. fax machine 17. Children, please behave! A. do and say the right things B. do something C. do what somebody tells you to do D. more on your legs, but not run 18. We now toast bread _________ a toaster on the table. A. by B. with C. from D. in 19. Which_________ shall I press to turn the radio on? A. button B. roll C. roller D. plug 20. Don’t sit_________ the sun too long. A. among B. on C. over D. in

Dàn ý thuyết minh về cây tràm ạ

1) Chiến tranh thế giới lần thứ 2 a) Nguyên nhân của cuộc chiến tranh thế giới thứ 2 b) Những sự kiện nào khẳng định Liên Xô là nước giữ vai trò chủ chốt trong phe đồng minh tiêu diệt chủ nghĩa phát xít c) Bài học của mỗi người sau khi đã học về cuộc chiến tranh thế giới thứ 2 Giúp em vs ạ, em cảm ơn

h ms biết đến acc này của admin :))) Vẽ hoa đi, hoa gì cx đc

Cho tam giác ABC vuông tại A có AB=3cm, AC=4cm. Kẻ đường phân giác BD của góc ABC a, Tính BC, AD,DC b, Trên BC lấy E sao cho CE=2cm. C/m tam giác CED đồng dạng với tam giác CAB c, C/m ED=AD