1.Trừ các phân thức: a. 2x+8/x^2-4x+4 - 7/x-2 b. x - xy/x+y - x^3/(x+y)(x-y) c. a+b/a^2-ab+b^2 - 1/a+b d. a - 2 + 4a/a+2 - a^3+b/a^2-2a 2. Chứng minh rằng: 3a^2+3/a^3-1 - a--1/a^2+a+1 + 2/1-a=0

Phân tích đa thức thành nhân tử a) 7x^2+ 14xy b) x^2 - 2x-15 Ai giúp mình nhanh với. Thank you <3

mọi người giải chi tiết từng bước giúp em ạ

Choose the best answer : 1. _______ we lived in town, we often went to the theater a. After b. When c. For d. Or 2. He took the food eagerly, _ he had eaten nothing since dawn.a. if b. in case c. but d. for 3. _______ the sun rose, the fog dispersed.a. As b. When c. Before d. After 4. _______ a married man, he has to think of his family. a. If b. As c. or d. so 5. Tired___ he was, he offered to carry her.a. as b. though c. Although d. however 6. Some people waste food_______ others don't have enough. a. as b. in case c. while d. before 10. Strong_______ he was, he couldn't lift it.a. like b. as c. or d. and 14. Take a map with you _______ you lose your way.a. if b. in case c. so that d. so 15. The play was very boring, _______ they walked out.a. so b. if c. when d. while 16. She'll only do the job_______ you pay he more.a. unless b. after c. if d. as 17. He hasn't written to us_______ he left.a. when b. for c. because d. since 18. I never take and umbrella_______ it's raining heavily.a. unless b. if c. otherwise d. or 19. He got a new alarm clock_______ he'd get up on time. a. because b. and c. so that d. so' 20. He agreed to go climbing_______ he hated heights. a. despite b. in spite of c. so d. although

Use the verbs in brackets in the correct tense or form 16.My brother (join)…………the army when he (be)……….young. 17.I (see)……. a car accident while I (wait)………..for you at this corner yesterday. 18.Mr.John (be)………..principal of our school since last year. 19.Mr. Smith (teach)…………….at this school since he (graduate)………………..in 1990. 20.My father (not watch)……….TV every night. 21.I (meet)…………………. Arthur 3 weeks ago. 22.Yesterday the police (report)…………that they (capture)……………………..the thief. 23.My friend (thank)…………………me for what I had done for him. 24.Someone (steal)………….. my handbag on the bus. 25.The Browns (live)……. in Paris for 7 years when the second world war (break)………. out. 26.Last month I (be)…………………….in the hospital for ten days. 27.Don’t call me in the afternoon. I usually (be)………………...away in the afternoon. 28.John (drive)………..that car ever since I (know)……….him. 29.People (speak)……….English in most of Canada. 30.The dog (wag)………his tail whenever he (see)………me.

Vẽ đậu mầm/chibi *trông ngáo tý nhá* NL: Vk off Hoidap òi :))

Thực hiện phép tính ạ Nhanh ạ Cần gấp

I wish my summer holiday .... longer A Will be B is C were D has been

Công thức rút gọn sinx+ cosx= √2 ...............= √2............... sinx- cosx= √2 ...............= √2...............

Tìm x 1. 4x ( x-3) - (2x-5)^2=-1