Cos2x +sinx +2m+1=0 có 3 nghiệm thuộc (-π/6;π/2)

2sinx.cosx-2=cosx-4sinx tổng nghiệm nhỏ nhất và nghiệm âm lớn nhất

tiìm nghiệm nguyên của pt 4(x^3+y^3)=x^2+6xy+y^2

Tìm $x$ sao cho: x $x^{4}$ - 6 = $x^{4}$ + 2$x$ + 5

Cả bài này nữa nha mọi người, làm hết

Mọi người giúp mình với, ai nhanh, đúng và trình bày đẹp nhất mình sẽ cho 5 sao và câu trả lời hay nha Spam = kick

Vẽ con bò sữa cute nha, khi nào acc kia mất toi sẽ chuyển hẳn qua acc này sống

13. To prevent , you should eat a lot of garlic and keep your body warm. A. cold B. mumps C. flu D. headache 14. Be careful with you eat and drink. A. who B. this C. what D. that 15. Eating a lot of junk food may lead to your . A. pain B. stomachache C. obesity D. fitness 16. In order to have good , you should eat lightly and laugh cheerfully. A. spirit B. body C. health D. mood 17. Do you believe that eating carrots helps you see at night? A. most B. the most C. much more D. less 18. We should try to keep everything around us clean and then flu will find it to spread. A. difficultly B. difficulties C. difficult D. difficulty 19. My father does morning every day. A. running B. well C. exercise D. weak 20. We should play sports or do exercise in order to stay in . A. fit B. health C. look D. shape 21. You can avoid some diseases by yourself clean. A. keeping B. taking C. looking D. bringing 22. The Japanese eat a lot of fish instead of meat they stay more healthy. A. but B. because C. although D. so 23. She looks tired. What’s the ……….. with her? A. matter B. happen C. wrong D. right 24. Minh is absent from class today ……….. he is ill. A. but B. because C. when D. so 25. He is a(n) ______. He doesn't have a habit of eating meat. A. patient B. expert C. vegetarian D. adult 26. She usually eats some sweet cakes before going to sleep, so she may put____ weight if she continues to do that. A. in B. up C. on D. into 27. Watching too much television is not good you or your eyes. A. with B. to C. at D. for 28. When you have flu, you may have a cough and a nose. A. runny B. running C. flowing D. noisy 29. When you have a temperature, you should drink more water and rest . A. most B. more C. most D. less 30. I forgot to wear a sun hat today and I got a . A. stomachache B. earache C. backache D. headache 31. My brother played volleyball with his friends on the beach yesterday. Hissk in turns brown and got some _____. A. sunburns B. sickness C. allergies D. weight 32. Don’t eat that type of fish: you may have a/an . A. sick B. sore C. energy D. allergy 33. Do you believe that eating carrots helps you see at night? A. much more B. less C. most D. the most 34. Sorry! I’m busy tonight. I have an ……….. with my doctor at 7 o’clock. A. opportunity B. occasion C. appointment D. activity 35. Don’t eat too ________ candy. It’s bad for your teeth. A. much B. many C. lots of D. more 36. I’m glad ________you’re feeling better. A. hear B. hearing C. to hear D. of hearing 37. You should wash your hand ______ meals. A. after B. in C. before D. at 38. You can have better health when you______ drinking a lot of soft drink. A. avoid B. keep C. get D. prefer 39. I was caught in the snowy storm yesterday. After that, I had a(n)_____ and a headache so I thought I had flu. A. earache B. toothache C. weakness D. sore throat 40. Your sister can______ in shape by doing gymnastics regularly. A. place B. stay C. fit D. turn 41. You will get______ if you gain weight rapidly. A. cough B.flu C. obesity D. stomach ache 42. You shouldn't go out with your friends today and should relax at home because you can make your flu______. It will be bad for their health. A. drop B. spread C. limit D. depress 43______ does Minh feel nervous? – Because he’s seeing the dentist. A. How B. Why C. What D. When 44. ______! You will have a strong heart. A. Eat vegetables more B. Watch TV more C. Eat less fruits D. Wash your face less 45. ______! You will have more time to concentrate on your study. A. Take more pictures when you go out B. Do your exercises more C. Go to sleep early D. Talk on the telephone with your friends less 46. ______! You can lose your weight more quickly. A. Take care of yourself more B. Walk around the park more regularly C. Focus on your own study D. Drink mineral water more when you play in the sun 47. She usually plays badminton, ______she eats a lot of healthy food. A. and B. but C. so D. or 48. You can choose fish and rice for your lunch, ______you can choose fried chicken and some apples for it. A. so B. or C. but D. and 49. He felt pain in his eyes two days ago, ______his mother took him to the doctor. A. but B. because C. or D. so 50. I like eating ice-creams very much, ______I should eat them less to avoid having toothache A. because B. or C. but D. so

Bài 1:Cho A=x036y.Tìm các chữ số x và y để A chia cho 2,5 và 9 đều dư 1.

30 điểm giúp mình với Cố gắng làm xong trước 6:40 nha