Giúp mk nha cần gấp
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
a: Xét ΔAMB và ΔAMC có
AM chung
MB=MC
AB=AC
Do đó: ΔAMB=ΔAMC
Bài 4:
a: \(A=2x^4+3x^3-5x^2+2x+5\)
\(B=x^4+3x^3-6x^2+2x+1\)
b: \(A+B=3x^4+6x^3-11x^2+4x+6\)
\(A-B=x^4+x^2+4\)
c: \(A-B=x^4+x^2+4>=4>0\forall x\)
went
are practicing
does-do-goes
to go
ask
watching
doing
to do
will become
was
1.went
2.are practicing
3.does-do-goes
4.to go
5.ask
6.watching
7.doing
8.to do
9.will become
10.was
III. Dùng đại từ quan hệ hợp lí để kết nối các câu sai thành một câu
1. Brenda is a friend. I went on holiday with her.
=> Brenda who I went on holiday with is a friend
2. This is Mr.Smith. His son Bill plays in our team.
=> This is Mr.Smith whose son Bill plays in our team
3. Her book was published last year. It became a best seller.
=> Her book which was published last year became a best seller
4. This is a bank. We borrowed the money from it.
=> This is a bank which we borrowed the money from
5. I told you about a person. She is at the door
=> I told you about a person who is at the door
6. Jack's car had broken down. He had to take a bus
=> Jack whose car had broken down had to take a bus
7. I lent you a book. The book was written by one my friends
=> I lent you a book which was written by one my friends
8. Some boys were arrested. They have been released
=> Some boys who have been released were arrested
9. Do you know a restaurant? We can have a good meal there
=> Do you know a restaurant where we can have a good meal
10. I don't remember the day. I left school on that day
=> I don't remember the day when I left school
11. This is the man. I met him in Paris
=> This is the man whom I met in Paris
12. I wanted the painting. You bought it
=> I wanted the painting which you bought
13. This is the chair. My parents gave it to me
=> This is the chair which my parents gave to me
14. She's the woman. She telephoned the police
=> She's the woman who telephoned the police
15. He's the person. He wanted to buy your house
=> He's the person who wanted to buy your house
16. We threw out the computer. It never worked properly
=> We threw out the computer which never worked properly
17. Are you the man? The man won the first prize
=> Are you the man who won the first prize
18. The man was badly injured. He was driving the car
=> The man who was driving the car was badly injured
19. The children broke the window. They live in the next street
=> The children who broke the window live in the next street
20. That's the woman. I was telling you about her
=> That's the woman who I was telling you about
21. Romeo and Juliet were lovers. Their parents hated each other
=> Romeo and Juliet whose parents hated each other were lovers
22. This is the story of a man. His wife suddenly loses her memory
=> This is the story of a man whose wife suddenly loses her memory
23. A man brought in a small girl. Her hand had been out by flying glass
=> A man brought in a small girl whose hand hand been out by flying glass
24. There's the lady. Her dog was killed
=> There's the lady whose dog was killed
25. He's the person. His car was stolen
=> He's the person whose car was stolen
26. They're the people. Their shop burned down last week.
=> They're the people whose shop burned down last week
câu 1 phải là whom chứ