Bài 2: Cho đa thức f(x) thỏa mãn điều kiện: x.f(x + 1) = (x + 2).f(x). Chứng minh rằng đa thức f(x) có ít nhất hai nghiệm.

Tìm GTNN của biểu thức A = |x+12|+|x-10|+ 2000

vẽ mầm hô cố lên nhóm All falls downn vẽ có tâm xíu nha màu hay ko thì tùy cute xíu cũng đc NL: Nhóm trưởng bật đoàn đi ạ ^^

Ai biết kiểu tô màu này thì chỉ mình với ạ.

Bài 6: Cho đường tròn (O,R) và điểm A nằm ngoài (O) ( OA > 2R ), kẻ 2 tiếp tuyển AB và AC với đường tròn (O) (B,C là các tiếp điểm). Gọi H là giao điểm của BC và OA tia AO cắt (0) tại P và Q (P nằm giữa A và Q) al Chứng minh tứ giác ABOC nội tiếp và xác định tâm I của đường tròn này. b/ Chứng minh : OA vuông góc BC và BP là tia phân giác của góc ABC c/ Chứng minh : PH.QA = QH.PA Giúp mik 6c với ạ ....

8 Cho tam giác ABC có AB - AC. Trên cạnh AB lấy D, trên tia đối của tia CA lấy E sao cho BD=CE. Kẻ d đi qua D và song song với AC cắt BC tại F.Cm DCEF là hbh

A=√x|√x+1 Tìm gtnn B với B=A(x-1)

vẽ hộ em ca này đi hơi ít điểm vì em hết mất điểm rồi

Find the mistake and correct it. 21. I feel tired or stressful because of studying. ……………… A B C Fill in the blank with a suitable word. - Most energy nowadays (22) from fossil fuels such as petroleum, coal, and natural gas. - If we don’t find new (23) of energy, we will (24) up all the fossil fuels in the 21st century. - (25) January 17th, 1995, a powerful earthquake hit the city of Kobe, Japan. Word forms. 41. She was (EXTREME) …………………… knowledgeable about the history of China. 42. Many people were buried (LIVE) …………………… after the earthquake. 43. The book doesn’t say much about prices, but it is very (INFORM) …………………… about everything else. 44. He lost in the election because he was a weak and (DECIDE) …………………… leader. 45. I couldn’t help it. The accident was (AVOID) ……………………. Pronunciation 46. A. films B. plants C. problems D. stores 47. A. injured B. named C. ranked D. solved 48. A. think B. those C. there D. than Choose the best answer A, B, C or D to complete the following sentences. 49. Women only began to gain _________ with men in the 20th century. A. equality B. fair C. same D. balance 50. IQ tests are a method of measuring certain aspects of_________ ability. A. memorial B. intelligent C. intellectual D. intelligence 51. I’ m going to have my house_________ this weekend. A. redecorates B. redecorate C. redecorating D. redecorated 52. The number of books in the library_________ to over five million. A. has risen B. has rised C. has raised D. have raised 53. The earth’s climate is getting warmer. _________, we don’t fully understand why. A. Moreover B. However C. Therefore D. Though 54. No matter how she tries, she never _________ over her shyness. A. gets B. goes C. sees D. comes 55. We can trust Jim. He is the kind of person who always _____ his promise. A. stands by B. comes up C. looks up to D. pays back 56. It is wrong to _____ poorer people. A. look down on B. make off with C. get away with D. put down to 57. He takes _____ his father in many ways. A. after B. in C. on D. up 58. I am fed ________ hanging around here with nothing to do. A. up on B. out of C. up with D. by 59. The garage is going to repair the car for us next week. A. We are going to have the car repair at the garage next week. B. We are going to have the car repaired at the garage next week. C. We are going to make the car repaired by the garage next week. D. We are going to make the car repair at the garage next week. 60. Women are better at running a home than men. A. Men don't run a home as well as women. B. Men don't look after a home better than women. C. Men is worst at running a home than women. D. Women are better home runners than men.

1/ Although Nam was the stronger of the two, his attacker soon overpowered him.  Despite ............ 2/ He can speak French well enough to go to the conference. (FLUENT)  His French..... 3/ I think we ought to permit him to do whatever he chooses. (HAND)  I think ....... 4/ This is the quickest way to get into the town centre.  There is ...... 5/ The decorators have finished the whole of the first floor.  We have ..... 6/ I felt stupid when I realized what I’d done. (FOOL)  I felt such ............... 7/ Would you like to contribute something to our campaign? (MAKE)  Would you like ..... 8/ I’m sure you were driving too fast.  You must ............. 9/ It was overeating that caused his heart attack.  If he ........ 10/ My boyfriend is very short-tempered.  My boyfriend loses. ....... 11/ Money is of little value on a desert island. (COUNTS)  Money .... 12/ The last time we were here was in 1980.  We .... 13/ John is very self-confident. (CONFIDENCE)  John has… 14/ There is no ice cream left. (RUN)  We have ........... 15/ I had better go back to work. (TIME) It is .... 16/ He is more a lecturer than a teacher. He ..... 17/ Collecting stamps is Peter’s great passion. (CRAZY)  Peter is ....... 18/ He watched videos all day. (ENTIRE)  He spent ..................... 19/ The flight to Moscow lasted three and a half hours.  It took ......... 26. Today/ there/ be/ little/ traffic/ yesterday. ………… 27. long/ does/ how/ you/ take/ home/ market/ go/ to/ from/ the/ it/to/ ?  …… Rewrite the following sentences based on the given words. 28. Nick hasn’t been to Vietnam before. (time)  ……… 29. When I was young, I regularly walked to school. (used)  …… 30. You don’t need to talk so loudly.  There is …… 31. Whenever she went to Paris she bought a new dress.  She never went …… 32. She intended to find out who is responsible for the accident.  She had …… 33. The train couldn’t run because of the storm. The storm prevented …… 34. He prefers plain water to coffee.  He would …… 35. Although she said that she would come, I don’t think she ever will.  Despite …… 36. We invited a pop star onto the chat show, but he didn’t turn up.  The pop star …… 37. My father used to play football when he was young.  My father doesn’t … 38. We got lost in the jungle because we didn’t have a map.  If we had …… 39. It is a three-hour drive from Hanoi to Nam Dinh.  It takes .. 40. When did you first know him?  How …