5x(12-5x)-(6x-3)(5-4x) (5-2x)^2+5x(x-1)-(1-3x)^2 (2x-1)^3-8(x-3)(3+x)+12x(x-2) (2x-7)^2-3(x-1)^2+(x+6)(6-x) ai làm nhanh em cho trlhn vs 5* ạ

chứng minh biểu thức này luôn dương : 2x^2+4x+3 giúp mình với

1. He often …………… up late. A. get up B. gets up C. got up D. getting up 2. ……….. you often ……………. TV? A. Do/watch B. Do/watches C. Have/watch D. Does/watches 3. Mr. Brown ……………….. English. A. Speak B. speaks C. does speak D. speakes 4. I usually ………………….. shopping on weekend. A. goes B. does go C. go D. do 5. Hai often ………………… his face at 6.15. A. washes B. washing C. does wash D. wash 6. Thanh and Mai always …………………… a movie on Saturdays. A. See B. sees C. do see D. does 7. ………….he often …………………… a bus to school? A. Do/take B. is/take C. does/takes D. does/take 8. We …………………… students in class 8 A.. Are B. is C. do D. eat 9. She ………………… homework in the evenings. A. Do not B. does not do C. doing D. do 10.He usually …………………… a taxi to the railway station A. Takes B. take C. taking D. does take 11. They often ……………………their parents on every Saturday. A. Visit B. visits C. does not visit D. visiting 12.My and I always …………………… to the countryside by bus. A. Went B. goes C. do go D. go 13.Our teacher usually …………………… us many exercises. A. Give B. giving C. gives D. does give 14.He often …………………… a train to work. A. catches B. catch C. don’t catch D. catching 15.The sun ……………………in the East. A. rise B. rises C. raise D. does rise 16. Angela ______ to the cinema last night. A. go B. went C. going D. doesn’t go 17. My friends ______ a great time in Nha Trang last year. A. had B. have C. having D. don’t have 18. Last summer I _____ Ngoc Son Temple in Ha Noi. A. did visit B. visit C. visits D. visited 19. My parents ____ very tired after the last trip. A. is B. being C. were D. was 20. Phuong _____ to Hanoi yesterday. A. return B. returned C. returns D. doesn’t return 21. Yesterday, I ______ to the restaurant with a client. A. go B. went C. going D. doesn’t go 22. I ______ to school last Sunday. A. do go B. didn’t go C. isn’t going D. doesn’t go 23. She ______ married last year? A. Did....got B. Does....get C. Did.....get D. doesn’t..... go 24. What ....you ______ last night? - I did my homework. A. Did....Do B. Does....Do C. Did.....Does D. doesn’t..... Do 25. Yesterday, I (get) ______ up at 6 and (have) ______ breakfast at 6.30. A. get/ had B. got/ had C. gets/ has D. gets/ have 26. They (meet) ____________their teacher at the moment. A. is meeting B. are meeting C. meet D. meeting 27. We (visit ) _____________the museum at the moment. A. is visiting B. is visiting C. visit D. are visiting 28. John (not read) ________ a book now. A isn’t reading B. reading C. is reading D. are not reading 29. Silvia (not listen) ________ to music at the moment. A is listening B. isn’t listening C. listening D. are not listening 30. Maria (sit) ________ next to Paul right now.? A. Are .....sitting B. Is..... sitting C. do...sitting D. Does... sitting

Trong app medibang piant làm sao để chèn layer và xóa lớp

Vẽ mầm Y/C : Câu này dành cho ai chưa có nhóm mà có nhóm rùi thì cũng được trả lời nhưng có thể cho tui biết vài bẹn chăm cày mà chưa có nhóm nah

vẽ hộ mik tên Huyền Trang Với ak

cho phương trình 2x^2 +mx+ m -2 =0. tìm m để phương trình có hai nghiệm x1, x2 thỏa mãn

31. Jeff wanted to know…………….. a. that why were his friends laughing b. why were his friends laughing c. why his friends were laughing d. the reason why his friends laughing 32. Mr Hawk told me that he would give me his answer the………..day a. previous b. following c. before d. last 33. She…………him whether he liked the steak she cooked a. asks b. wondered c. wanted to know d. asked 34. His neighbours sometimes wondered……….he did for a living a. why b. when c. where d. what 35. Could you please tell me……………? a. It is how far to the nearest bus stop b. how far is it to the nearest bus stop c. how far to the nearest bus stop is it d. how far it is to the nearest bus stop 36. Marigold wondered………..Kevin and Ruth would be at the party a. that b. whether c. if d. b& c 37. He asked me……………. a. How long you have studied English. b. How long had you studied English c. How long you had study English d. How long you had studied English 38. The passenger asked…………….we landed a. what b. when c. if d. why 39. “I’ll tell you about this tomorrow, Mary.” said Tom. a. Tom said to Mary that he will tell her about that the next day. b. Tom told Mary that I would tell you about that the next day. c. Tom told Mary that he would tell her about that the next day. d. Tom told Mary that she would tell him about that the next day. 40. “I have something to tell you” Kerry said to Cheryl. a. Kerry told Cheryl I had something to tell her. b. Kerry told Chery he had something to tell her. c. Kerry told Cheryl she had had something to tell him. d. Kerry told Cheryl he had had something to tell her. 41. He said, “My wife has just bought a diamond ring.” a. He said that his wife had just bought a diamond ring. b. He said that my wife had just bought a diamond ring. c. He said that his wife has just bought a diamond ring. d. he said that his wife just bought a diamond ring. 42. “I will come with you as soon as I am ready”, she said to Philip. a. She said to Philip he will come to see you as soon as he I am ready. b. She told Philip she will come to see her as soon as she was ready. c. She told Philip she would come to see you as soon as she was ready. d. She told Philip she would come to see him as soon as she was ready. 43. “I wrote to him yesterday” a. She said to me I wrote to him the day before. b. She told me she wrote to him yesterday. c. She told me she had written to him yesterday. d. She told me she had written to him the day before. 44. “He is talking to your sister”, She said to me. a. She told me he was talking to your sister. b. She told me she was talking to my sister. c. She told me he was talking to my sister. d. She told me he was talking to her sister. 45. “It is the time to check what you have done”, the father said to the boys. a. The father said to the boys it was time to check what they had done. b. The father told the boys it was time to check what they had done. c. The father told the boys it was time to check what they have done. d. The father told the boys it is time to check what they had done. 46. “You will like my sister when you meet her” a. He told me you will like her sister when you meet her. b. He told me I will like his sister when I met her. c. He told me I would like his sister when I met her d. He told me I would be liked his sister when I met her. 47. “I didn’t meet Susan last week” a. He said he didn’t meet Susan the week before. b. He said he hasn’t met Susan last week. c. He said he hadn’t met Susan last week. d. He said he hadn’t met Susan the week before. 48. “I didn’t break your watch” a. The boy told the girl he hadn’t broken her watch. b. The boy asked the girl he hadn’t broken her watch. c. The boy told the girl he didn’t break her watch. d. The boy told the girl he hadn’t broken your watch. 49. “I found a lot of mistakes in your plan”. Catherine said to Kevin. a. Catherine told Kevin she found a lot of mistakes in his plan. b. Catherine told Kevin she has found a lot of mistakes in his plan. c. Catherine told Kevin she had found a lot of mistakes in his plan. d. Catherine told Kevin she had found a lot of mistakes in her plan. 50. “I have just seen your mother this morning”. a. Laura told Lewis I have just seen your mother this morning. b. Laura told Lewis she had just seen his mother that morning. c. Laura told Lewis she has just seen his mother that morning. d. Laura told Lewis he had just seen her mother that morning.

Cần lắm ạ! Đảm bảo vote 5*(uy tín lun)

Mn ơi nhớ giúp em là bài này chỉ gọi 1 ẩn thôi ạ Một khu vườn hình chữ nhật có chu vi là 140m. Người ta làm một lối đi chung xung quanh vườn có chiều rộng lối đi là 1m và diện tích vườn còn lại là1064m2. Tính chiều dài và chiều rộng của khu vườn. Cảm ơn mn trc ạ!