$\frac{x}{x^2+4x+4}$ +5 $\frac{x}{x^2+4}$ =2

1. John was _______ a week after the accident, but he has not been able to come to football practice yet. A. up and about B. vim and vigour C. fingers and thumbs D. life and death 2. I ate some tinned sardines that had expired and ended up feeling so sick that I _______ all the food I had eaten. A. brought up B. passed out C. packed up D. went off 3. I had been feeling very down in the dumps after being given the sack, but took ________ when a prestigious employment agency booked two interviews for me. A. stride B. shine C. heart D. issue 4. The sales assistants were so rude to me, I decided to take my ______elsewhere. A. income B. custom C. capital D. fortune

Những câu nói truyền cảm hứng mỗi ngày

Có thể nói là góc EBA = góc ACF là vì tam giác ABC cân tại A đc ko

Cho hàm số y=f(x)=2x -5 a,Tính f(1); f(-2) ; f(1/2) b, Tìm x để f(2x +3 )=f( x-1)

Giúp mình nha mình cảm ơn nhiều

I. Circle the best answer (A, B, C, or D) to complete each unfinished sentence. (1 point) 1. I love this painting of an old man. He has such a ................. smile. A. childhood B. childish C. childless D. childlike 2. You’d better leave for the airport now .............. there’s a lot of traffic on the way. A. in fact B. in time C. in order D. in case 3. I would like to thank you, ............... my colleagues, for the welcome you have given us. A. on account of B. on behalf of C. because of D. instead of 4. The poor child was in floods of .....................because his bicycle had been stolen. A. weeping B. tears C. crying D. unhappiness 5. The soldier was punished for ................ to obey his commanding officer’s orders. A. refusing B. regretting C. objecting D. resisting 6. She ............ her husband’s job for his ill health. A. accused B. blamed C. caused D. claimed 7. It’s time we .............. this old car and bought a new one. A. will B. had sold C. have sold D. sold 8. The project was rejected because of .............. funds. A. unavailable B. inconsiderable C. incomplete D. insufficient 9. Please leave this space ............ on the enrolment form. A. absent B. blank C. missing D. undone 10. You shouldn’t have criticized him in front of his friends. It was extremely ........... of you. A. unfortunate B. insensitive C. insensible D. unconscious 11. Phone me before ten; ................ I’ll be too busy to talk to you. A. unless B. whether C. otherwise D. if 12. According to the ............ of the contract, tenants must give six months’ notice if they intend to leave. A. laws B. rules C. terms D. details 13. The injured man was taken to hospital and ............ for internal injuries. A. cured B. healed C. operated D. treated 14. The door hinges had all been oiled to stop them ............... A. squeaking B. screeching C. shrieking D. squealing 15. Mary attempted to ............... herself with her new boss by volunteering to take on extra work. A. gratify B. please C. ingratiate D. commend 16. You are under no obligation ............ to accept this offer. A. indeed B. eventually C. apart D. whatsoever 17. Wasn’t it you yourself ........... the door open? A. to be left B. were left C. who left D. that should leave 18. If only motorists ............. drive more carefully! A. must B. shall C. would D. will 19. It is regretted that there can be no ............... to this rule. A. exclusion B. alternative C. exception D. deviation 20. Complete the form as ............... in the notes below. A. insisted B. specified C. implied D. devised

Cho các số dương `a,b,c` chứng minh `a^2/(b + c) + b^2/(c + a) + c^2/(a + b)` lớn hơn hoặc bằng `(a + b + c)/2`

1. I/ known/ English/ since/ have/ teacher/ September/ my 2. interesting/ have/ I/ read/ the most/ This is/ book/ ever 3. The boy/ playing/ spends games/./ always/ much time 4. younger/ was/ Jane/ When ,// sing/ She/ a jazz band/ used to.

a) x/x-2y + x/x + 2y + 4xy/4y²-x² b) 1/3x-2 - 1/3x+2 - 3x-6/4-9x² c) x²-36/2x+10.3/6-x