ĐỀ 2

Bài 1 : Giải các phương trình sau ; a/  4x + 20 = 0       

                                                         b/  (x² – 2x + 1) – 4 = 0            

                                                         c/  \(\dfrac{x+3}{x+1}\)+\(\dfrac{x-2}{x}\)=2

Bài 2: Giải bất phương trình sau và biểu diễn nghiệm trên trục số  3x – (7x + 2) > 5x + 4 

Bài 3 : Lúc 7giờ. Một ca nô xuôi dòng từ A đến B cách nhau 36km rồi ngay lập tức quay về bến A lúc 11giờ 30 phút. Tính vận tốc của ca nô khi xuôi dòng. Biết rằng vận tốc nước chảy là 6km/h.

Bài 4 : Cho hình chữ nhật có AB = 8cm; BC = 6cm. Vẽ đường cao AH của tam giác ADB.

a/ Chứng minh tam giác AHB đồng dạng tam giác BCD

b/ Chứng minh AD² = DH.DB      

c/ Tính độ dài đoạn thẳng DH, AH

Viết chương trình nhập 1 mảng số nguyên gồm n phần tử

- in ra các phần tử của mảng vừa nhập

- In ra các phần tử có giá trị chẵn

- Đếm xem có tất cả bao nhiêu phần tử chẵn. In ra tổng số phần tử chẵn

Choose the correct answer 1. She loved tennis and could watch it until the ………. came home. a. cattle b. birds c. horses d. cows 2. Could you close the window? There is a bit of a ……………… a. current b. wind c. draught d. breeze 3. Thousands of steel …… were used as the framework of the new office block. a. beams b. girders c. stakes d. piles 4. The ceiling fans were on, but unfortunately they only ………… the hot, humid air a. stirred up b. poured through c. turned into d. cut back 5. He set one alarm clock for five o’clock and the other for five past so as to …….. that he did not oversleep. a. assure b. ensure c. insure d. reassure 6. When Jim was eating a cherry, he accidentally swallow the ……. a. nut b. stone c. seed d. core 7. It was only …….. he told me his surname that I realize we had been to the same school. a. then b. until c. as soon as d. when 8. He got an excellent grade in his exam …….. the fact that he had not work particularly hard. a. on account of b. because c. in spite of d. although 9. Their eventual choice of house was ……. by the time Peter would take to get to the office. a. related b. consequent c. determined d. dependent 10. It turned out that we …………… rushed to the airport as the plane was delayed by several hours. a. hadn’t b. should have c. mustn’t d. needn’t have Provide the correct verb form / tense 1. You must tell me the truth. I insist on (tell) ………. ……………….. the truth. 2. (Thompson / catch) …………………… the ball, we would have won the game. 3. Don’t worry. We (finish) ……………….. the report by 11. 4. Tom was please (admit) …………………… to the college. 5. There were some people (row) ……………………. on the river. 6. Alex has a test tomorrow that he needs to study for. He (not watch) ……………….. right now. 7. Were I (know) ………………… the answer, I (tell) you right away. 8. By the end of last year he (read) ………….……. four Shakespeare plays and by next year he (read) ………… two more