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1 tháng 10 2021

1. We last met Tom when he got married

2. I haven’t eaten this kind of food before

3. I have got married for 4 years

4. He started working for this factory 3 years ago

5. I have never read this book before

6. I have not heard him since June

7. We haven’t Tom since he went to London

8. It’s the first I have met a famous singer

9. I haven't in Rome for 2 years

10.  My father has writen for 5 years

11. Linda began cooking 5 hours ago.

12. The last time the Browns visited Paris was in 1998.

Bài 2: 

a: \(\Leftrightarrow2x-1=49\)

hay x=25

b: \(\Leftrightarrow4\sqrt{x-3}-16\sqrt{x-2}+2\sqrt{x-2}=-20\)

\(\Leftrightarrow x-2=4\)

hay x=6

28 tháng 2 2022
28 tháng 2 2022

\(\dfrac{1}{2}-\dfrac{1}{3}=\dfrac{1}{6}\) mà

8 tháng 6 2021

1 If she had enough money, he could buy that book

2 It took us the whole day to look for these old pictures

3 Ba suggested that Mary ask Tom for help

4 Ba is not old enough to see horror film

1.If she has enough money, she will buy that book.

2.It took us the whole day to look for these old pictures.

3.Ba suggested Mary ask Tom for help.

4.Ba is not enough old to see horror films.

DD
15 tháng 6 2021

\(A=2+x-x^2=\frac{-1}{4}+x-x^2+\frac{9}{4}=-\left(x-\frac{1}{2}\right)^2+\frac{9}{4}\le\frac{9}{4}\)

Dấu \(=\)khi \(x-\frac{1}{2}=0\Leftrightarrow x=\frac{1}{2}\).

Vậy \(maxA=\frac{9}{4}\).

15 tháng 6 2021

\(A=-x^2+x+2=-\left(x^2-x-2\right)\)

\(=-\left(x^2-2.\frac{1}{2}x+\frac{1}{4}-\frac{9}{4}\right)=-\left(x-\frac{1}{2}\right)^2+\frac{3}{2}\le\frac{3}{2}\)

Dấu ''='' xảy ra khi \(x=\frac{1}{2}\)

Vậy GTNN A là 3/2 khi x = 1/2 

13 tháng 2 2022

Cái đề bín mất tiu gòi shao làm :))

13 tháng 2 2022

Where are the posters?

How are you?

What is the color of the shirt?

Where is the picture?

Is there a living room?

ai giúp với1. Tom played the game ………………………………. ( excellent2. I hope that we will have a good ………………….. ( cooperate)3. This bookshop offers a wide …………………….. of book in foreign languages ( select)4. The house is small, but it is very …………………. ( comfort )5. Canadian Prime Minister Justin Trudeau looked ………………………… impressed by the Vovinam ( deep) 6. She has never …………………… anything like it ( tasty)7. I don’t know how to cook, so the meat was dry and ………………………… ( taste)8. I read that book many...
Đọc tiếp

ai giúp với

1. Tom played the game ………………………………. ( excellent

2. I hope that we will have a good ………………….. ( cooperate)

3. This bookshop offers a wide …………………….. of book in foreign languages ( select)

4. The house is small, but it is very …………………. ( comfort )

5. Canadian Prime Minister Justin Trudeau looked ………………………… impressed by the Vovinam ( deep) 

6. She has never …………………… anything like it ( tasty)

7. I don’t know how to cook, so the meat was dry and ………………………… ( taste)

8. I read that book many times because I found it ………………………. ( interest )

9. They do a really …………………… chicken and mushroom soup ( taste )

10. The internet is a fast and ……………………. Way for us to communicate with friends ( convenience)

11. Rice cooked in clay pot is one of the ……………………… in this restaurant ( special) 

12. When would be a ………………………… time for you to meet me? ( convenience)

13. His company exports many farm ……………………… (production)

14. In this resort, you can enjoy all the comfort and………………………. Of modern tourism ( convenient)

15. The stores in mall will offer a wide ………………………… of products ( select )

16. After ……………………………., they decided to accept our offer ( discuss)

17. Rice is Vietnam’s main ……………………………. ( produce )

18. I don’t like the ……………………. Of olives ( tasty)

19. The food was nice, but the ……………….. wasn’t good. ( serve)

20. We grew up in the same ………………………… ( neighbor)

21. The hotel is ………………… situated close to the beach ( convenience)

1
23 tháng 12 2021

giúp với ặ

 

8 tháng 1 2022

1.Khanh is better  painter than Giang.
=>Giang can't...paint better than Khanh.....................................
2. Charles Dicken's novels attract alot of children. 
=>A lot of children....are attracted by Charles Dicken 's novels ...........................................