$x^4 + 4x^2 - 5$ Phân tích đa thức thành nhân tử

Câu 4. Cho tam giác ABC có góc B =90 độ, vẽ trung tuyến AM .Trên tia đối của tia MA lấy điểm E sao cho ME = MA. C/m a. Tam giác ABM = tam giác ECM b. AC > CE c. Góc BAM > góc MAC Giúp em nhé !!!

Bài 1: Cho tam giác ABC cân tại A. Kẻ tia Bx nằm giữa hai tia BA và BC. Trên tia Bx lấy điểm D nằm ngoài tam giác ABC.Cm: DC< DB

Rút gọn biểu thức: (x-2)(x^2+2x+4)-x(x-3)(x+3)

Even though your time on the job is temporary, if you do a good enough job, your work there will last forever. - Idowu Koyenikan (Author of Wealth for All) Bạn hiểu thế nào về câu nói này ? Giúp mình với, chiều mình có bài nói mà bí idea quá ạ.

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Viết một đoạn văn diễn dịch khoảng 10-12 câu với câu chủ đề " Trong cuộc sống nếu chúng ta để mất niềm tin là mất tất cả "

Chỉ em bài này gấp ạ hứa cho 5 sao luôn

III. TRANSFORMATION: 1. The boys are very naughty.  What a naughty boy! 2. The weather is awful today.  How ! 3. This story is very interesting.  What ! 4. These dresses are very lovely.  How ! 5. What a lovely smile you have! How ! 6. He is strong. He can carry the box.  He is 7. The weather isn’t warm. We couldn’t go swimming.  The weather isn’t 8. His father is very poor. He can’t buy a big house.  His father doesn’t have 9. The weather is very cold. They can’t have a picnic. The weather isn’t 10. This exercise is too difficult. He can’t do it. This exercise isn’t 11. I am very lucky because I have many good friends. I am lucky 12. The table is too heavy. The boy can’t lift it. The boy isn’t 13. The ceiling is too high. I can’t reach it. I am not 14. The book was so interesting that I read it twice. The book was 15. The essay is too long. He can’tfinish it in 15 minutes. He doesn’t have 16. He is not very tall. He can’t reach the booksheft.  17. The children couldn’t go swimming because the sea was very rough. The sea was 18. She couldn’t do this math exercise because it’s extremely difficult.  This math exercise is 19. There are 45 students in our class. We only have 42 chairs in this room.  We don’t have 20. You can’t put this book in your pocket because it is too big. This book isn’t 21. He studied very hard so he passed the entrance exam easily.  He studied 22. She plays the piano skillfully. She will be the famous pianist one day.  She plays the piano 23. Lan lives next to my house. Lan is 24. They spent two years building this house. It 25. It takes me two hours to do my homework every day. I 26. My friend’s hair is long, curly and black. My friend has 27. My sister‘s face is round, small and pink.  My sister has 28. It’s a small and black box. It is made of metal.  It is a 29. He gave me new and black gloves. They were made of leather.  He gave me 30. My uncle lives in an old house, but it is very large and lovely.  My uncle lives in giúp mik vs

c)Gọi B là tập hợp các số chẵn thuộc thuộc tập hợp A. Hãy viết tập hợp B theo hai cách.