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Từ biểu thức, suy ra:
(x+1)2=0
Thay x=-1:
(-1+1)2=0
02=0(hợp lý)
Vậy phương trình có nghiệm x=-1 duy nhất
London is Britain's biggest city. It's a very old CAPITAL It's a city of POPULAR architecture and it has many beautiful parks. It also some excellent theaters and MUSEUM London is very INTERESTING in summer. It's a CROWDED city with foreign tourists and HAS more than 8 milion visitors A YEAR The city is famous FOR its shopping and has many excellent department stores.
MÌNH NGHĨ LÀ ĐÚNG. CHÚC BẠN HỌC TỐT.
London is Britain's biggest city. It's a very old capital It's a city of interesting architecture and it has many beautiful parks. It also some excellent theaters and museum . London is very crowded in summer. It's a popular city with foreign tourists and has more than 8 milion visitors a year. The city is famous for its shopping and has many excellent department stores.
#NamN
Chuyển các câu sau sang câu bị động
1. My sister cooks meals everyday
-> Meals are cooked by my sister every day
2. My mother cleaned the floor yesterday
-> The floor was cleaned by my mother yesterday
3. My friend has written ten emails for 2 hours
-> Ten emails have been written by my friend for 2 hours
4. My father is painting our house
-> Our house is being painted by my father
5. My sister was buying some food at 11 a.m yesterday
-> Some food was being bought at 11am yesterday by my sister
6. My brother uses a pencil to draw beautiful pictures
-> A pencil is used to draw beautiful pictures by my brother
7. They bad finished their work before you came yesterday
-> Their work had been finished before you came yesterday.
8. I will call you If there is any important information
-> You will be called by me If there is any important information.
9. Mr Tuan delivered the speeh yesterday
-> The speeh was delivered yesterday by Mr Tuan
10. Turn off the computer at night
-> The computer should be turn off at night
#NamN
Tck nhe
1, (-) She wasn't my boss
(?) Did she is your boss?
2, (+) I was at concert last Sunday
(?) Did you at the concert last Sunday
3, (+) Yes , I did
(-) No , I didn't
4, (+) Yes, They were
(-) No, They won't
5, (+) We didn't swim in the lake
(?) Did you swim in the lake?
6, (-) We won't at the gym last week
(?) Did you at the gym last week?
7, (+) She went go to the office by car
(?) Did she go to the office by car?
1. Are you at school now?
2. How many lessons do you hav today?
3. He has Vietnamese four times a week
4. Do you read book in your free time?
5. He study events in past and present in Viet Nam and in the world history
6. You can have this book when I finish it
7. I study with a partner twice a week
8. Tuan leanr to read English by reading English magazines
9. My parents live in the small village in the countryside
10. He goes to school to Saturday except Sunday
11. We read short story and write essays during Vietnamese lessons
12. I learn new words in thier meaning and write sentence
13. Snow White is the main character of the story
14. He use bamboo and rode a house to fight against the enemies
15. The monkeys jumped up and down on the trees
16. I practise listening English by watching cartoon on TV
17. He had a big party at Nga's house
18. His family went back to their hometown by coach
19. She often chats online with her friends in Viet Nam
20. They came back late in the evening
1. was repaired
2. will be bought.
3. are being watered
4. will have been learnt
5. was watched
6. has been read
7. was stolen
8. was broken
tk mk với
1. The broken table ( repair ) was repaired yesterday
2. A new mobile phone ( buy ) will be bought next month
3. Flowers ( water ) is being watered in the garden now
4. English ( learn ) has been learned for 3 months by this weekend
5. This movie ( watch ) was watched yesterday
6. This book ( read ) has been read three times
7. My motorbike ( steal ) has stolen yesterday
8. My watch ( break ) was broken last night
#NamN
1. part
2. moving
3.but
4. popular
#học tốt #
1. She takes (pat/part/pass/place) in football club.
2.This is a (funny/moving/comedy/excited) film and it make me cry a lot.
3. He is lazy (therefore/but/howerver/so) he is always lucky in examinations.
4. Swim is a (popular/unpopular/unhealthy/bad) sport in the summer becase people want to be in the water in the hot weather.
Như đã hứa, t.i.c.k nha c