rút gọn các biểu thức: (x+y+z) ²-2(x+y+z)(x+y)+(x+Y) ²

một cano đi xuôi từ bến a đến bến b với vận tốc 30km/h,sau đó ngược lại từ b đến bến b.thời gian xuôi ít hơn tg đi ngược 1 giờ 20 phút.tính khoảng giữa bến a sang bến b bt rằg vận tốc dòng nước là 5km/h

ARTICLES Complete each sentence with a, an, the or - 1. I love living in this __________ city. 2. Generally speaking, __________ boys are physically stronger than girls. 3. Bill enjoys reading __________ mystery novels. 4. Do you remember __________ girl that we saw last night? 5. P1: Did you go to the Thai restaurant? P2: No, I went to __________ place where you and I normally go. 6. He is __________ really good person. 7. My brother is __________ expert at fixing cars. 8. __________ Paris is a beautiful city. 9. My __________ teacher's name is William. 10. We got our son __________ dog for Christmas. 11. I bought ________ pair of shoes. 12. I saw _________ movie last night. 13. They are staying at ________ hotel. 14. Look at __________ woman over there! She is a famous actress. 15. I do not like ___________ basketball. 16. That is __________ girl I told you about. 17. ________ night is quiet. Let's take a walk! 18. ________ price of gas keeps rising. 19. John traveled to ___________ Mexico. 20. Juan is __________ Spanish. 21. I read ________ amazing story yesterday. 22. My brother doesn't eat __________ chicken. 23. ________ love is such __________ beautiful thing. 24. I live in _________ apartment. _________ apartment is new. 25. I would like___________ piece of cake. 26. I was in __________ Japanese restaurant. __________ restaurant served good food. 27. Sara can play __________ guitar. 28. Are you coming to _________ party next Saturday? 29. I bought ________ new TV set yesterday. 30. I think ________ man over there is very ill. He can't stand on his feet. 31. I watched _________ video you had sent me. 32. She was wearing _________ ugly dress when she met him. 33. I am crazy about reading ________ history books. 34. She is _________ nice girl. 35. Do you want to go to __________ restaurant where we first met? 36. He is _________engineer. 37. He thinks that _________ love is what will save us all. 38. Did you get married after leaving _________ university? 39. I was at ________ train station when you called me. 40. I left ________ work at six o'clock pm. 41. They are opening _________ new shops here. 42. She was returning from __________school when I met her. 43. She has a strong alibi. She was at _________cinema at the moment the crime was committed. 44. Are you going to _________ beach this afternoon? 45. He went to __________ prison for domestic violence. 46. The kids are sitting at ________ table eating cereals. 47. Are you at __________ home? 48. _________ sun rises from the east. 49. The doctor advised me to eat ___________ apple every morning. 50. He didn't like __________ movie that you suggested.

giúp em với ạ ................ heo-me - i need you...

Giải hộ mình từ câu c trở đi với ạ. 20đ luôn minh dang can gap...

Giúp mk giải chi tiết với ạ. Thank

1 hôm, Dũng hỏi mẹ bao nhiêu tuổi " Khi nào con bằng tuổi mẹ thì khi đó mẹ sẽ 57 tuổi." Biết năm nay Dũng 9 tuổi, hỏi năm nay mẹ bao nhiêu tuổi?

Giải phương trình $\sqrt{x-4}$ + $\sqrt{9x-6}$ = 20

Mọi người chỉ em vs ([bí quá ]giải theo cách lập HPT)

Mọi người giúp em với ạ Xin cảm ơn