Làm gấp giúp em ạ. Em cảm ơn. Vote 5* cho ai trình bày đúng và kĩ.

HELP MEEEEEEEEEEEEEEEEEEEEEEEEEEEE

Đề bài :viết số 20 thành tích của 2 số nguyên (viết tất cả các cách có thể ) Bài 2 :Viết số 16 dưới dạng tích của 2 số nguyên bằng nhau .Có bao nhiêu cách viết ? Bài 3 : cho 16 số nguyên .tích của 3 số bất kì luôn là một số âm .Chứng tỏ rằng tích của 16 số đó là một số dương ? Chỉ cần giải 3 bài trên thôi nhé

Tính 9,6×0,2×15,4×2×15,4:0,25/30,8:0,5×7,7:0,125×5×6

câu 1: so sanh phân số: a. M=13/19 MŨ 2 + 17/19 MŨ 4 và B=17/19 mũ 2+13/19 mũ 4 B. A=-93/13 mũ 6 + -97/13 mũ 8 và B=-97/13 mũ 6 + -93/13 mũ 8 các bn giúp mik với ạ cho ctlhn và tim ah

Cali: Chịu Chịu mấy thanh niên, chắc ngứa tay wa

26. Why didn’t you attend the meeting? Oh, I did not know. If I (know)……………………… I (come) ……………………..there. 27. What ……………….we(do)……………………… if they do not come tomorrow? 28. If I had enough time now, I (write) ………………………………. to my parents. 29. It’s too bad Helen isn’t here. If she (be) ………………………….. here, she (know) …………………..what to do. 30. If I (eat) …………………………… breakfast tomorrow morning, I (get) …………………………. hungry during class. 31. If she (come) ……………………………….. late again, she (lose) ……………………………her job. 32. I (let) ……………………………. you know if I (find) ……………………………………. out what’s happening. 33. If we (live) ………………………………. in a town, life would be better. 34. I’m sure he wouldn’t mind if we (arrive) ……………………………. early. 35. We (phone) ……………………………………. you if we have time. 36. If I won the lottery, I (give) ………………………………. you half the money. 37. It (be) …………………………………….. a pity if she married Fred 38. If I’m free on Saturday, I (go) ………………………….. to the mountains. 39. She (have) …………………………….. a nervous breakdown if she goes on like this. 40. I know I (feel) better if I (stop) …………………… smoking. 41. If I (be) …………………… you, I (help) ………………………… him. 42. I (understand)…………………………………….. him if he (speak) …………………………….. more slowly. 43. He didn’t listen to the teacher. If he (listen) ………………………….. carefully, he (perform) …………………… well in the examination 44. He’s waiting for his mother to come back from Chicago. If his mother (come) …………………………. home, he (have) ……………………………………. a lot of presents. 45. He wanted to buy some Christmas presents but he couldn’t. If he (afford) …………………………….. to buy, his children (be) ……………………………. very happy to greet a new year. 46. The kitchen will look better if we (have) ………………………………….. red curtains. 47. If I knew his address, I (go) ……………………….. round and see him. 48. If you (not be) ……………………. so busy, I (show) ………………………… you how to play. 49. It (be) ………………………………… quicker if you (use) a computer. 50. If we (have) ………………………………….. some eggs, I (make) ………………………………… you a cake. 51. Bring him another if he (not/like) ……………………………….. this one. 52. She (be) …………………………. angry if she (hear) …………………………. this tomorrow. 53. Unless you are more careful, you (have) …………………………….. an accident. 54. If you (like), I (get) …………………………………. you a job in this company. 55. If grandmother (be) ……………………….. 5 years younger, she (play) ………………………… some games. 56. If he sun (stop) …………………………… shinning, there (be) ………………………………………… no light on earth. 57. If I (be) ………………………………… a millionaire, I (live) ……………………. on Mars. e cảm ơn ạ

the way of life in this country is......to that in my country

Exercise 7: Put the verbs in brackets into the correct form: 1. If I (know)…………………………. that you were ill, I (go)……………………… to see you. 2. If she'd had enough money, She (buy) …………………………… a car. 3. I (buy) ……………………………………….. a car If you lend me some money. 4. I (see) …………………………… him if I (go) …………………………. to the party last night. 5. We could have gone out if the weather (not be)……………………………………… so bad. 6. If the book (not be )…………………………… expensive, I'll buy it. 7. You would be very surprised if he (return)……………………………… 8. I'll go out if it (not rain)………………………………. 9. They wouldn't come to the party if you (not invite) …………………………………..them 10. What ……………………………… you (do) ……………………. if you (be) ………………….. him? 11. If that hat costs much, I (buy) ……………………………. a small one. 12. If you (drive) ……………………...more carefully, you (have) ………………………… so many accidents. 13. If I (make) …………………………….. that mistake again, my teacher (get) ……………………… angry with me. 14. If I spoke English, my job (be) …………………………….. a lot easier. 15. If he (go) ……………………………….. to London yesterday, he ( meet) ………………………………. his old friend. 16. I will lend them some money if they (ask) …………………………….. me. 17. If we had known who he was, we (invite) ………………………….. him to speak at our meeting. 18. My dog (bark) …………………………… if it (hear) ………………………….. any strange sound. 19. If I (have) ………………………….. enough money, I would buy a house. 20. They (not/let) …………………………… you in if you (come) late. 21. If you (not go) ……………………………….. away, I (send) ……………………………… for a policeman. 22. If I (be) ………………………………… in your place, I (accept) …………………… Mr. Anderson’s invitation. 23. If I (win) ……………………………. a big prize in a lottery, I’d give up my job. 24. If I (be) ……………………………….. you, I (tell) …………………………… the truth. 25. I was busy. If I (have) …………………………..free time. I (go) ……………………………. to the cinema with you. em cảm ơn ạ

$x^{14}$-10$x^{13}$+10$x^{12}$-10 $x^{11}$+...+10$x^{2}$ -10x+10 tại x=9