Phân tích các đa thức sau thành nhân tử:

a, x^4+2x^3+2x^2+2x+1

b, x^2y+xy^2+x^2z+y^2z+2xyz

c,x^5+x^4+x^3+x^2+x+1

phân tích đa thức thành nhân tử  a) 2x mũ 2 -5xy-3y mũ 2

b)x mũ 3 -7x+6

c) x mũ 3 +5x mũ 2 +8x+4

d) x mũ 3 -9x mũ 2 +6x+16

e) x mũ 3 - x mũ 2 -x -2

-$\frac{-11x^3}{8y^4}\times \frac{12y^2}{55x}$

Tính GTLG của 2a biết
a, $\cos \left(a\right)=\frac{-5}{13}; \mathrm{\pi }<\mathrm{a}<\frac{3\mathrm{\pi }}{2}$
b, tan a = 2
c, tan a  = $\frac{7}{8}$

$\frac{4}{x-4}-\frac{2}{4-x}$ = ????

cho hình thang cân ABCD có AB//CD VÀ AB<CD,hai đường cao AH,BK

a)Chứng minh DH=CK

b)Gọi O là giao điểm của hai đường thẳng AD và BC,I là giao điểm của AC và BD,E là trung điểm của đoạn thẳng CD.Chứng minh 3 điểm O,I,E thẳng hàng

Viết bài văn phân tích tác phẩm "Cúc áo của mẹ" !!!!!!

Viết dài một chút nhee

Cảm ơn!!!!!!!!!!!!!!!!!!!

1 chiếc ô tô có khối lượng là 750kg chạy với tốc độ 54km/h

a.tính thế năng trọng trường của ô tô với tốc độ cao h=7m

a¹¹ : a³ : a ²(a > 6)

P = $\left(x-\frac{1}{2}\right)\left(x^2+\frac{x}{2}+\frac{1}{4}\right)$

Cho tam giác ABC vg tại A có AB nhỏ hơn AC, AD là phgiac của BAC(D thuộc BC) AE=AB

a) ABD=AED

b) AFC CÂN

c) IH/DH=1/3 

Choose the best answer a, b , c or d to indicate the correct answer to each of the following questions.

1. nam wanted to know what time _________.a. the movie began b. the movie beginsc. did the movie begin d. does the movie begin

2. i wondered________ the right thing.a. if i am doing b. was i doingc. am i doing d. whether i was doing

3. he told me __________ him up at six o'clock.a. please pick b. to pick c. should pick d. i can pick

4. the woman asked________ catch a bus to school.a. can the children b. if the children canc. whether the children could d. could the children

5. bob said he________ a lot of good marks that semester.a. gets b. getting c. have got d. got

6. they told their manager that they________ their best to do the tasks.a. try b. will try c. are trying d. would try

7. she asked me where i________ the previous night.a. was b. am c. had been d. has been

8. she________ me whether i liked french fries.a. ask b. asks c. asked d. asking

9. “________ off the television”, he said.a. please turn b. please to turn c. turned please d. please, turning

10. william said that the train________ yeta. had arrived b. hadn’t arrived c. haven’t arrived d. hasn’t arrived

11. he asked the children ________ the electric sockets.a. not touching b. not to touch c. if they don’t touch d. don’t touch

12. david asked me who ________ the writer of that book.a. was b. were c. is d. has been

13. he wants to know whether i ________ back to hoi an the next day.a. come b. came c. will come d. would come

14. they asked me how many students________ .a. i taught b. i teach c. i did teach d. did i teach

15. laura wanted to know________ shopping the previous afternoon.a. if we had been going b. that if we had been goingc. we were going d. that we were going

16. lucy asked me why i had not gone to paris________ .a. the summer before b. summer agoc. the next summer d. last summer

17. tony told me that they________ meat two days________.a. have not eaten / ago b. had not eaten / beforec. did not eat / before d. would not eat / ago

18. charlie ________ that his father was in hospital.a. told me b. told to me c. said me d. asked me

19. julia said that she ________ there at noon.a. is going to be b. was going to be c. will be d. can be

20. he said that linda and john ________ married ________ .a. were getting / tomorrow b. are getting / the next dayc. were getting / the next day d. will getting / the day after

21. mr. brown said that he _______ tv the night before.a. was watching b. watched c. had watched d. has watched

22. the teacher said columbus ________ america in 1492.a. discovered b. had discovered c. was discovering d. would discover

23. andrew told me that they _______ fish two _______ days.a. have not eaten/ ago b. had not eaten/ previousc. did not eat/ before d. would not eat/ last

24. i asked martha________ to enter law school.a. are you planning b. if she is planningc. was she planning d. if she was planning

25. jackson told his teacher that he________ his assignment the day.a. had submitted / following b. will submit / previousc. would submit / following d. was submitting / previous

26. laura said she had finished that book since ________ .a. yesterday b. two days ago c. the day before d. the next day

27. john asked me________ the football match on tv the night before.a. that i saw b. had i seen c. if i had seen d. if had i seen

28. my uncle told us that ________.a. he must go now b. he had to go then c. he had to go now d. he must go now

29. someone ________ me there had been an accident on the motorway.a. asked b. said c. spoke d. told

30. the teacher asked the boys ________ .a. why did they fight b. why they were fightingc. why they fight d. why were they fighting

6¹² x 6³ : 6⁵ : 6¹⁰

cho tam giác abc vuông tại a. trên tia đối của tia ab lấy e sao cho a là trung điểm của be  a) cm : tam giác abc = tam giác aec b) vẽ trung tuyến bh của tam giác bec cắt cạnh ac tại m. tính đô dài đoạn cm khi ca=18cm  c) từ a vẽ đường thẳng // với ec cắt bc tại k. cm 3 điểm e,m,k thẳng hàng

$\frac{0,4^5}{0,2^4}$ giải hộ mình với ạaa

Mùa hoa mận ( Chu Thùy Liên , Thuyền đuôi én )
Câu 9:Câu thơ cuối bài: Cho người đi xa nhớ nối trở về ... gợi trong em tình cảm gì đối với quê hương?
Câu 10: Tưởng tượng một người đi xa trong bài thơ đã nhớ nối trở về quê hương vào mùa hoa mận . Hãy viết đoạn văn ( khoảng 6-8 dòng) để ghi lại cảm xúc , tình cảm diễn ra trong tâm hồn người đó.

B. Bọn phản động thuộc địa.

C. Xác định được toàn bộ lực lương của cách mạng Đông Dương.