Đáp án+Giải thích các bước giải:
$\dfrac{2}{\sqrt{2}-1}$$=\dfrac{2.(\sqrt{2}+1)}{(\sqrt{2}-1)(\sqrt{2}+1)}$$=\dfrac{2\sqrt{2}+2}{1}$$=2\sqrt{2}+2$
`2/(\sqrt{2}-1)`
`=(2(\sqrt{2}+1))/((\sqrt{2}-1)(\sqrt{2}+1))`
`=(2\sqrt{2}+2)/(2-1)`
`=2\sqrt{2}+2`
Phân tích đa thức thành nhân tử đừng làm tắt nhaa
Chỉ cần giúp đáp án đúng không cần giải thích nhanh với ạ
Chọn đáp án đúng (gấp ai xong trc cho hay nhất) Điều kiện xác định của biểu thức : 2x - 1 / căn x -5 (dấu căn kéo đến hết số 5) A . x lớn hơn hoặc bằng 5 B . x > 1/2 C . x > hoặc bằng 1/2 D ,x>5
Ai giúp em giạng này với ạ hứa cho năm 🌟 và trả lời hay nhất
Đề trong hềnh.............................................
Các bạn giúp mik vs, mik đang cần gấp ạ
giúp mình bài toán đố với mn ơi
2x^2 +4x-6 phân tích thành nhân tử
HW 1. She said to me: “you can sit here” 2. Nga said: “I am taking my test tomorrow” 3. I said to her: “Jim is driving late today” 4. He said: “I don’t want to eat anything now” 5. Minh said to me: “I won’t be home this evening because I have to work late” 6. Huong said to me: “you must do your homework everyday” 7. I said to Nam: “There isn’t any milk in this bottle” 8. He said: “I’ll be here again tomorrow” 9. We said to them: “your houses are very nice” 10. She said to them: “He has lived here for five years” 11. She asked me: “Are you going to visit Hue?” 12. I asked Ha: “Does your father work here?” 13. Lien asked me: “Will I finish my exercises at home? 14. Thanh asked Minh: “Are you going to leave tomorrow?” 15. Hung said: “Is Phong nha cave in Southern Viet Nam, Nhi?” 16. She said: “Can you speak English, Hung?” 17. I asked the boy: “Do you know the way to the station?” 18. Mary asked me: “Do you want to visit London?” 19. She asked me: “Is Ha Tien in kien Giang province?” 20.I said: “Do you often take your dog to the park, Thu?” 21. They asked me: “Will you buy us some food?” 22. She asked Ba: “Why do you collect waste papers?” 23.. Hoa asked her parents: “When will you visit Hanoi?” 24. Mrs Brown asked Thu: “What language do you speak?” 25. He asked Trang: “What time do schools begin?” 26.I asked him: “How do you go to the airport?” 27. She asked Toan: “Where do you learn English?” 28. Lien asked Ba: “What do they save paper for?” 29. Lan asked Lien: “How much does this dress cost?” 30. Ba asked Tam: “How often do you wash your clothes?” 31. Thu asked Huong: “What kind of books do you read?”
giải giúp mình vs ạ mình đang cần gấp
Loga.vn - Cộng Đồng Luyện Thi Trực Tuyến