dịch nghĩa this từ : cottage : region fur : weed :

$\text{Tìm x}$ $x-x=100$ $x.x=100$

Viết biểu thức sau dưới dạng tổng hai bình phương: : x^2 - 2xy + 2y^2 + 2y+1

Tô màu phù hợp hộ mình với .-. Ko cần vẽ đâu :)) Copy mình về rồi ghi những màu chính cần tô cx đc <3

so sánh các số hữu tỉ: 1) x=(-23/68) và y=(-57/172) 2) x=(-31/33) và y=(-49/51)

Hòa tan 1,6g CuO vào 100g dung dịch H2SO4 20%.Tính: a)Khối lượng chất dư b)Khối lượng muối tạo thành c)C% dung dịch thu được

He (have) ....... a toothace She (have)...... a sore eye

Mong mọi ng giúp tui với ạ tui đg cần gấp Tui cảm ơn trước❤️

1. John invited me ________________ part in his party. (TAKE) 2. It’s worth ________________ that dress because it looks perfect on you. (BUY) 3. It’s no use ________________ her. She cannot learn all this. (TEACH) 4. It was an unpopular decision to postpone ________________ the new hospital. (BUILD) 5. It started ________________ heavily right after I went out. (RAIN) 6. In addition to ________________ , she is also working in an office. (LEARN) 7. I will arrange ________________ you some day. (MEET) 8. Please always remember ________________ the door because the security in this area is not very good. (LOCK) 9. I regret ________________ you that you are fired. I am sorry. (TELL) 10. I have finished ________________ the test, which is quite challenging. (DO) 11. I can’t stand ________________ because she looks like a clown. (LAUGH) 12. I am used to ________________ up late because I can only work best at night. (STAY) 13. I am looking forward to ________________ you soon. (SEE) 14. I wish ________________ a good job in the future. (HAVE) 15. I was tempted ________________ the day off. (TAKE) 16. I was preparing ________________ when she arrived. (LEAVE) 17. I swear ________________ you until the end of my life. (LOVE) 18. I recollect him/his ________________ that it was dangerous. (SAY) 19. I really miss ________________ the guitar with Ms. Hoa. She is in France now. (LEARN) 20. I prefer you ________________ at home tonight. (STAY) 21. I must confess to ________________ nothing about computers. (KNOW) 22. I like ________________ out with my friends at the weekends. (HANG) 23. I don't appreciate ________________ treated like a second-class citizen. (BE) 24. I can't face ________________ them after everything I’ve done to them. (SEE) 25. I can resist ________________ the Christmas gift. (OPEN) 26. I am opposed to ________________ a bicycle on the pavement. (RIDE) 27. I am considering ________________ avelling to Europe this summer. (TRAVEL) 28. House prices are expected ________________ sharply. (RISE) 29. How can they justify ________________ such huge salaries? (PAY) 30. How about you quit ________________ ? Your health is getting much worse. (SMOKE) 31. He took to ________________ after his wife left him two years ago. (DRINK) 32. He managed ________________ out of the car. (GET) 33. He denied ________________ the money. (STEAL) 34. He attempts ________________ hard this semester. (STUDY) 35. He warned me not ________________ the exhibits. (TOUCH) 36. He got his sister ________________ him with his homework. (HELP) 37. He got back in the car and resumed ________________ . (DRIVE) 38. He delayed ________________ for a job until the next year. (APPLY) 39. He commanded his men ________________. (RETREAT) 40. He bitterly resents ________________ treated like a child. (BE) 41. He appears to enjoy ________________ to her. (TALK) 42. Fred confessed to ________________ the jewels. (STEAL) 43. Fancy ________________ you here! My friends tell me a lot about you. (SEE) 44. Excuse my ________________ you. (INTERRUPT) 45. Everyone objects to ________________ a new hotel here. (BUILD) 46. Don’t forget ________________ me a letter. I’ll be missing you. (SEND) 47. Do you need me ________________ you home? (TAKE) 48. Did you happen ________________ my iphone anywhere? (SEE) 49. Did I mention ________________ to see Vicky on Sunday? (GO) 50. Could I trouble you ________________ the window, please? (OPEN)

1. Cho B= ($\frac{1}{√x+3}$ + $\frac{3}{x√x -9√x}$):( $\frac{√x}{√x+3}$ - $\frac{3√x-3}{x+3√x}$) a) Rút Gọn B b) Tìm X để B>1 2. Cho C= $\frac{x+2}{x√x+1}$ + $\frac{√x-1}{x+√x+1}$ - $\frac{1}{√x+1}$ a) Rút Gọn C b) CHứng minh Rằng C luôn có giá trị không âm x 3. Cho D= ( $\frac{2√x+x}{x√x-1}$ - $\frac{1}{√x-1}$) : $\frac{x-1}{x+√x+1}$ a) Rút Gọn D b) Tìm x để x<$\frac{-1}{2}$ MỌI NGƯỜI GIÚP MÌNH VỚI Ạk