a) 9p²+pq+q² b) -a²-2a-1 c) 36p⁴+12p²q²+q⁴ d) 16x²-9(x+y)²

vẽ đậu cute , cute vô làm ơn ạ NL : nên xả điểm không ạ mn ? tại mình chưa bị khóa acc bao giờ ạ (=.='')

9,9<X<10,1 số tự nhiên x thoả mã là

Cho tam giác abc cân ab=ac=5cm bc=8cm D là trung điểm của bc Độ dài trung tuyến ad là A 4cm. B 3cm. C 5cm. D 8cm

Part II. Choose the correct answer A, B, C or D to complete each of the following sentences. Write your answers on the answer sheet. 6. A ……………..is a book which tells you the meaning of the words. 7. We are good friends. We _______ each other since we were in primary school. A. know B. knew C. have been known D. have known 8. Nobody went to the party, _________? A. does he B. do they C. didn’t they D. did they 9. Mrs. Thoa is generous to the poor __________________ she is not rich. A. so B. but C. however D. although 10. Will you join us on a __________________ trip to Vung Tau ? A. three days B. three-days C. three-day D. day-three 11.Mary: “I’ve got an interview for a job tomorrow.” – Peter: “_________.” A. Thank you B. Same to you C. Good luck D. See you Part VI. Rewrite each of the following sentences in such a way that it means exactly the same as the provided sentence. Write your answers on the answer sheet. 34. If someone doesn’t put the coal in, the fire will go out. -> Unless _____________________________________________________________. 35. She started working as a secretary five years ago -> She has _____________________________________________________________. 36. The storm destroyed many houses in this village last week. -> Many houses _____________________________________________________________.

Làm hộ mình từ câu 9 với câu 10 và bài 9 nhé .,,,

Giúp mình với, hứa sẽ vote 5 sao

30. What time .....................you go )... ............to school ? 31. Lan ( watch ) .........TV three times a week. 32. Nam and Ba often (go) .............. fishing on Sundays. 33. We (not go ) .........to school on Sundays. 34. Lien ( not listen )..... ..........to music every night. 35. My brother likes jogging. He (jog ) ...............every morning. At the moment he (jog) ............. in the park. 36. What is she doing ? She (cook ) ......... ..... lunch. 37. Where is he ?. He (be ) ................ in the yard. He (play ) .......... ..badminton. 38. Ba (not read ) ........ .... now, he ( do )... ......his homework. 39. ....................... Lan and Hoa (skip) ............................ now? 40. They ( do )...... ........... their homework tonight. 41. Nam ( visit). ....... Hue this summer vacation. 42. What are you going to do this summer vacation? I (visit ) ................Ha Noi. 43. We (waste) ...............too much power at the moment. 44. He (buy) .....................a new house next month? 45. The Nile river (be)..........the longest river tn the world and it (flow)..........to the Mediteranean Sea. 46. Mr. and Mrs. Thinh ( not grow) ............vegetables in their garden.

Làm nhanh hộ mik nha ạ giải thích

D= 3x (x-2y) -7/6 y (y-6x) tại x=3 , y=6