a, Rút gọn b, Biết a >= 1, hãy so sánh |A| với A c, tìm a để A = 2 d, Tìm GTNN của A

tìm x a, ( 25- x ) . 4 =60 b, ( x-4) : 4 =4 c, 2 mũ 2 . x + 3 mũ 2 .x =52 d, 4 mũ 2 . x : 2 =40

EXERCISE 1: CHUYỂN CÁC CÂU SAU SANG BỊ ĐỘNG. 1. They told me that you were the best architect in this city. 2. She reported that the flowers were killed by frost. 3. Some people inform me that the director is going to take a business trip to England. 4. That officer announced that the meeting was delayed until next week. 5. He discovered that this cotton was grown in Egypt. 6. They promise that the performance will start on time. 7. He recommends that we should stay at the city center. 8. We believed that Alice would pass the driving test. 9. The director notifies all the workers that they will have to work extra hard this month. 10. They have persuaded me that they will go with me to the stadium. 11. They have decided that the company will go to the beach together at the weekend. 12. People think that Maradona is the best football player in the 20th century. 13. They find that the job is not suitable for a girl like her. 14. The teacher explained that this powerful engine pulled the train. 15. He told me that his football team had played well last season

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tính A = x^2-5x+xy-5y tại x = -5 y = -8

trong một hội nghị có 100 người tham dự trong đó có 10 người ko bt tiếng Nga + Tiếng Anh, có 75 ng biết tiếng Nga và 83 ng biết tiếng Anh. hior trong hội nghị có bnh ng biết cả Tiếng Nga + TA.

Cách viết calli trên medibang / jumpaint Hướng dẫn chi tiết Có hình minh họa

phân tích đa thức thành nhân tử bằng phương pháp dùng hàng đẳng thức

Viết tập hợp sau bằng cách chỉ ra tính chất đặc trưng c=(1/1; 1/2; 1/3; 1/4)

Viết lại câu cho nghĩa không đổi 14) When did your teacher teach you? => How long ……………………………………………………………………? 15) She started to sell newspapers here 5 years ago. => She has……………………………………………………………………. 16.It’s the first time that I have ever seen a football match. I have……………………………………………………………………….. 17.No cities in Viet Nam are noisier than Ho Chi Minh City. Ho Chi Minh City …………………………………………………………. 18.Living in Hoa Binh is cheaper than living in Ha Noi. Living in Hoa Binh is not …………………………………………………. 19.I last saw Mai 5 months ago. I haven’t……………………………………………………………………. 20. Nobody in his class is as intelligent as he. He is........................................................................................................... 1.They no longer play tennis. 🡺They used to……………………………………………………………….…… 2. I don’t go to church every Sunday any longer. 🡺 I used to…………………………………………………………………… He gets up early in the morning and he’s used to it. 🡺He’s used to……………………………………………………….…………. I last met him in July. 🡺I haven’t…………………………………………………………………. I have studied English for five years. 🡺I started………………………………………………………………………….. Mary no long plays the guitar. 🡪Mary doesn’t..………………………………………….……………….. We aren’t careless any longer. 🡪We no longer………………………………………………………………. Tom doesn’t fall asleep in class any more. 🡪Tom no longer…………………………………………………………… We often take our children to the zoo and we’re used to it. 🡪We’re…………………………………………………………………….. Nancy doesn’t play cards any longer. 🡪Nancy used to…………………………………………….……………………… They no longer go out at night. 🡪They used to………………………………………………………………… We used to play cards together in our free time. 🡪We don’t……………………………………………………………….. Someone used to come here to find gold. 🡪Someone no longer……………………………………………………….. 14. She prefers to watch cartoon. She enjoys........................................................................................................ 15. It took her ten minutes to go to school. She spent............................................................................................................ 16. Learning E is very interesting. It’s................................................................................................................. 17. Your bicycle needs to be repaired before going on picnic. You have to...................................................................................................... 18. I love to read books very much. I enjoy ............................................................................................................................ 19.I often went to the cinema at weekends. I used...................................................................................................................... 20.I do this exercise in three and a half hours. It takes..............................................................................................................................