Bài 3 CHO tam giác ABC vuông tại A, đường cao AI. Đường phản giác của góc ABC cắt AC tại M và cắt AK tại N. a) Chúng minh: ABKA đồng dạng ABAC và BA? = BI.BC b) Biết BA = 8 cm, BC=17 cm. Tính MC và MA c) Chúng minh BNI = BMA

Mark the letter A, B, C, or D to indicate the sentence that is best written from the words/phrases given.

36. he/improve/his spelling/he/not get/good grades

     A. He improves his spelling, so he won't get good grades.

     B. If he improves his spelling, he won't get good grades.

C. He improved his spelling because he doesn't get good grades.

D. Unless he improves his spelling, he won't get good grades.

37. My grandfather/recover/quickly/his serious illness

     A. My grandfather was recovered very quickly from his serious illness.

     B. My grandfather has recovered quickly from his serious illness.

C. My grandfather is recover quickly after his serious illness.

D. My grandfather recovered more quickly over his serious illness.

38. We/lost/so/stopped/ask/a policeman/direction

     A. We were lost, so we stopped to ask a policeman for direction.

     B. We lost, so we stopped and ask a policeman for direction.

C. We are lost, so we stopped asking a policeman about direction.

D. We were lost, so we stopped to asking a policeman for direction.

39. he/retire/eldest son/ take over/business

     A. After he retired, his eldest son took over his business.

     B. After he retired, his eldest son will take over his business.

C. After he retires, his eldest son will take over a business.

D. After he has retired, his eldest son took over a business.

40. Trung/often/go/village cultural house/always/open /public holidays

    A. Trung often went to the village cultural house so it always opens on public holidays.

    B. Trung often goes to the village cultural house when always opens on public holidays.

    C. Trung often goes to the village cultural house which always opens on public holidays.

    D. Trung will often go to the village cultural house always opening on public holidays.

. The car knocked a woman down in the street.

A woman is knocked down in the street by the car.

. Cows were eating grass on the meadow.

 Grass on the meadow is eaten by cows.

. My cousin will meet you at the station.

 You are met at the station by my cousin.

12. Nobody swept this street last week.

13. People drink a great deal of tea in England.

14. People speak English all over the world.

15. Tom was writing 2 poems.

 16. She often takes her dog for a walk

17. She didn’t introduce me to her mother.

18. Farmers usually milk cows twice a day.

19. He likes people to call him “sir”.

 20. Our teacher used to bid us talk in class

21. Workers were digging a large hole in the ground.

 22. The car knocked a woman down in the street.

23. Cows were eating grass on the meadow.

24. My cousin will meet you at the station.

25. She is running her own company.

Viết lại câu, đổi từ chủ động sang bị động

câu ghép đâu 

Bài 3: Tìm số nguyên x để đa thức (x2 - 3x - 3) chia hết cho đa thức ( x +2)

b) (x+2).(x+3).(x+4).(x+5) =24

tìm x

Bài 1: Cho AABC cân tại A, đường cao AH (H thuộc BC). Gọi M là trung điểm AB. Gọi E là điểm đối xứng với H qua M

a) Chứng minh AHBE là hình chữ nhật

b) Gọi N là trung điểm AH. Chứng minh N là trung điểm EC Gợi ý Ching minh ACHE là hình binh hành, suy ra hai đường chéo cắt nhau tại trung điểm mỗi đường

c) Cho AH -8cm, BC -12cm. Tinh diện tích tử giác AHBE

_{d) Chứng minh MN vuông góc với AH, tính MN Gợi ý: Sử dụng đưrờng trung bình để chứng minh}

_{e) Tinh diện tích tam giác AMH Gợi sy: Diện tich tam giác = % tich đưởng cao và cạnh đảy tương ứng}

_{giúp em d e ạ}