1. Sally and her family love (go) to the park in the summer. 2. Her mum likes (lie) on the blanket and loves (read) her favourite magazines. 3. Anna’s family (like) the park because they love (be) outdoors. 4. I enjoy (collect) dolls and it becomes my pleasure. 5. We love (watch) new films, and we (go) to watch a new Hollywood film next weekend. 6. My brother hates (do) the same things day after day. 7. Would you mind _____________ (watch) my bag for a few minutes? 8. I enjoy _____________ (listen) to music while I’m doing the cooking. 9. He wants _____________ (buy) a new computer game. 10. I’d like _____________ (speak) to Mr Davis, please. Is he there? 11. Please avoid _____________ (make) silly mistakes in this exercise. 12. The children would love _____________ (eat) French fries. 13. She really loves _____________ (work) with children. 14. We tried _____________ (call) you but your mobile was off. 15. They intend _____________ (build) houses on the school playing fields. 1) I don't fancy (go) _______out tonight. 2) She avoided (tell)________ him about her plans. 3) I would like (come) ________to the party with you. 4) He enjoys (have)_______ a bath in the evening. 5) She kept (talk)_______ during the film. 6) I am learning (speak)_______ English. 7) Do you mind (give)_______ me a hand? 8) She helped me (carry)_______ my suitcases. 9) I've finished (cook)_______ - come and eat! 10) He decided (study)_______ biology. 11) I dislike (wait)_______. 12) He asked (come) _______ with us. 13) I promise (help)_______ you tomorrow. 14) We discussed (go)_______ to the cinema, but in the end we stayed at home. 15) She agreed (bring)_______ the pudding to the dinner. 16) I don't recommend (take)_______ the bus - it takes forever! 17) We hope (visit)_______ Amsterdam next month. 18) She suggested (go) _______ to the museum. 19) They plan (start) _______ college in the autumn. 20) I don't want (leave) _______ yet
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5.(\(x+7\)) - 90 : (-2)\(^2\) = 10
5(\(x+7\)) - 90 : 4 = 10
5(\(x+7\)) - 22,5 = 10
5.(\(x+7\)) = 10 + 22,5
5.(\(x+7\)) = 32,5
\(x+7\) = 32,5 : 5
\(x+7\) = 6,5
\(x\) = 6,5 - 7
\(x\) = -0,5
Vậy \(x=-0,5\)
Bài 1:
A = \(\frac{x+4}{x-7}\) (7 ≠ \(x\) ∈ Z)
A ∈ Z ⇔ (\(x+4\)) ⋮ (\(x\) - 7)
[(\(x-7\)) + 11] ⋮ (\(x\) - 7)
11 ⋮ (\(x\) - 7)
(\(x-7\)) ∈ Ư(11) = {-11; - 1; 1 ; 11}
Lập bảng ta có:
\(x\)-7 | -11 | -1 | 1 | 11 |
\(x\) | -4 | 6 | 8 | 18 |
\(x\) ∈ Z | tm | tm | tm | tm |
Theo bảng trên ta có: \(x\in\) {-4; 6; 8; 18}
Vậy \(x\) ∈ {-4; 6; 8; 18}
Bài 2:
B = \(\frac{2x+3}{2x-1}\) (\(x\) ∈ Z; B ∈ Z)
B ∈ Z ⇔ (2\(x+3\)) ⋮ (2\(x\) - 1)
[(2\(x-1\)) + 4] ⋮ (2\(x\) - 1)
4 ⋮ (2\(x-1\))
(2\(x-1\)) ∈ Ư(4) = {-4; - 2; -1; 1; 2; 4}
Lập bảng ta có:
2\(x\)-1 | -4 | -2 | -1 | 1 | 2 | 4 |
\(x\) | -3/2 | -1/2 | 0 | 1 | 3/2 | 5/2 |
\(x\in\) Z | ktm | ktm | tm | tm | ktm | ktm |
Theo bảng trên ta có:
\(x\) ∈ {0; 1}
Vậy \(x\) ∈ {0; 1}
Olm chào em, cảm ơn em đã đánh giá bài giảng và bài học của Olm. Chúc em học tập hiệu quả và vui vẻ cùng Olm, em nhé.
dịch
TÌNH BẠN
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Bạn nghĩ rằng có nhiều bạn hay chỉ có một người bạn thân là tốt hơn? Tại sao?
Những bài viết xuất sắc trả lời các câu hỏi này sẽ được xuất bản vào tháng sau.
1. going
2. lying
3. liking
4. collecting
5. watching, go
6. to do
7. watching
8. listening
9. to buy
10. to speak
11. making
12. to eat
13. working
14. to call
15. to build
16. to go
17. telling
18. to come
19. having
20. talking
21. to speak
22. giving
23. carrying
24. cooking
25. to study
26. waiting
27. to come
28. to help
29. to go
30. bringing
31. taking
32. to visit
33. to go
34. to start
35. to leave