Cho biểu thức f(x) = x2 - 2(m+1)x +5m -1 . Tìm các giá trị của m sao cho : phương trình f (x)=0 có 2 nghiệm phân biệt x1;x2 thỏa mãn điều kiện x1 ² + x2 ² > 8

Giúp e bài này ạ. E sẽ votes 5* và ctlhn. E cảm ơn mn nhìu ạ ❤❤❤❤❤❤❤❤❤

Giới thiệu trò chơi dân giang mà bạn thành thạo

phân tích phép đối trong bài thơ Sáng ra bờ suối, tối vào hang, Cháo bẹ, rau măng vẫn sẵn sàng. Bàn đá chông chênh dịch sử Đảng, Cuộc đời cách mạng thật là sang.

Giải thích ý nghĩa mhan đề bài thơ mùa xuân nho nhỏ ? Giải thích nghĩa 2 từ lộc trong đoạn thơ

V. Read the passage then choose the best answers that fit the questions below. Cristiano Ronaldo was born in 1985 in Portugal. Ronaldo became a soccer superstar. He played for English team Manchester United, Spain's Real Madrid and for Portugal. He plays in Midfield, from where he regularly scores goals. Ronaldo started kicking a ball around when he was three. When he was ten years old, he joined Sporting Lisbon and became the only player in their history. In 2009, Ronaldo joined his boyhood heroes Real Madrid and became the most expensive footballer in history. He earned a lot of money at that time. He broke Real’s scoring record in his second season with 53 goals in all competitions. In 2012, Diego Mara Dona said Ronaldo was “the best player on the planet”. 1. Where was Cristiano Ronaldo from? A. England B. The South  C. Portugal D. USA 2. He became a ________ superstar. A. volleyball B. football C. tennis D. badminton    3. He began to kick a ball when he was_______. A. ten B. thirteen C. twenty D.  three  4. Why did Ronaldo become the most expensive footballer in history? A. Because he played very badly. B. Because he practiced hard. C. Because he played skillfully. D. Because he earned a lot of money.   5. He was said to be the best player on the ________. A. planet B. world C. history D. supermarket  VI. Choose one sentence that has the same meaning as the roof 1. Helen's favorite sport is table tennis. A. Helen hates playing table tennis. B. Helen dislikes playing table tennis. C. Helen enjoys playing table tennis. D. Helen isn’t fond of playing table tennis. 2. I do judo every Tuesday and Thursday. A. I do judo three times a week. B. I do judo twice a week. C. I do judo once a week. D. I do judo four times a week. 3. He is a good football player. A. He can’t play football B. He plays football well. C. He is good at playing football. D. Both B and C 4.  Although The Haunted Theatre is frightening, children love it. A. The Haunted Theatre is frightening, but children love it. B. The Haunted Theatre is frightening, because children love it. C. The Haunted Theatre is frightening, so children love it. D. The Haunted Theatre is frightening for children to love it. 5. I have to do homework, so I won’t watch TV tonight. A. I won’t watch TV tonight or I have to do homework. B. I won’t watch TV tonight but I have to do homework. C. I won’t watch TV tonight and I have to do homework. D. I won’t watch TV tonight because I have to do homework. 6. I started learning English 2 years ago A. I didn’t begin studying English in 2018. B. I haven’t learned English for 2 years. C. I have learned English for 2 years. D. I didn’t study English for 2 years. 7. No one in my class is as intelligent as Mike. A. Mike is more intelligent than some students in my class. B. Mike isn’t so good at English as the girls in my class. C. Mike can’t do all of the tasks in my class. D. Mike is the most intelligent student in my class. 8. Don’t talk in class. A. Keep silent in class. B. Make noise in class. C. Don’t keep silent in class. D. Not be quiet in class. 9. He is the tallest boy in the sport club. A. Every boy in the sport club is taller than him. B. No boy in the sport club is as tall as him. C. Every boy in the sport club is shorter than him. D. Both B and C 10. This is the first time I have studied online. A. I always study online. B. I have never studied online before C. Study online is my favorite. D. I have studied online many times.

theo tác giả, quan niệm về thẩm mĩ về cuộc sống của chủ tịch Hồ CHí Minh là gi?

Trên quãng đường từ Bình Dương đến Vũng Tàu, một xe máy đi với vận tốc 40km/giờ trong 3 giờ. Hỏi cũng quãng đường đó, một ô tô đi với vận tốc 60km/giờ mất bao lâu?

Đặt 5 câu nghi vấn và 5 câu cầu khiến và cho biết chức năng của chúng(không lấy vi du trong sgk)

III. Identify a mistake in each of the sentence needs correcting. 1. She likes talking to her friends about music in recess. A B C D 2. Yesterday, the children stay at home and did the homework carefully. A B C D 3. What did you buy your notebooks and books, Nam? - To reseach for our project. A B C D 4. Lan is very tired now although she went to bed late last night. A B C D 5. Tom and John do not never gone fishing in the winter. A B C D IV. Read the following passage, then choose the correct answer. There are a lot (1)_________ cable television channels today. People also produce numerous interesting programs to entertain people. The (2)___________ program tells us what is happening around the world. The comedy makes us laugh (3)___________ relax after long working hours. The cartoon (4)_______ cute characters. Some programs can both educate and (5)_______ young children such as 'Let's Learn (6)_________ VTV2. My (7)________ program is the game show 'Who's a millionaire?'. (8)________ favorite comedian is Xuan Bac. He is very (9)_________. In my free time, I often watch (10)_______ programs. 1. A. with B. of C. to D. about 2. A. film B. sport C. news D. music 3. A. and B. but C. or D. as 4. A. have B. had C. is having D. has 5. A. to entertain B. entertain C. entertaining D. to entertaining 6. A. of B. in C. at D. on 7. A. interest B. like C. favorite D. hobby 8. A. My B. I C. Me D. Mine 9. A. clumsy B. boring C. stupid D. funny 10. A. these B. this C. that D. the