Phân tích đưa thức thành ngân tử: -3x^2+7x-4 Làm 3 cách

Đọc hai câu thơ sau: "Nơi hầm tối lại là nơi sáng nhất Nơi con tìm ra sức mạnh Việt Nam" a)Xác định cặp từ trái nghĩa trong hai câu thơ trên? b)Trong cặp từ trái nghĩa ấy, từ nào được dùng theo nghĩa gốc, từ nào được dùng theo nghĩa chuyển?

Tính giá trị của x: x- √x-1 - 2√x-4 =0

Làm và giải thích chi tiết từng câu giúp em ạ

Viết chương trình nhập vào 1 số N nguyên dương và in ra màn hình các số chẵn từ 0 đến N, sao cho mỗi số chiếm 4 vị trí và 1 dòng có 15 số. (bằng ngôn ngữ lập trình pascal)

Ai làm hộ mik với !!!!!!!!!!!!!!

Câu này làm sao vậy m.n. mong mọi người giúpb

Nêu phương án xác định chu vi và đường kính của một ống nước hình tròn. (Gợi ý các dụng cụ có thể dùng: thước kẻ, sợi chỉ, bút chì, giấy, kéo)

Chia động từ 1. They usually(play) catch at recess. 2.Does she always(skip) rope after school? 3. Look! Hung(jump) in to the water. 4. He(go) to the movies tonight. 5.What you (do) next Sunday?I( visit) my grandparents. 6.Tomorrow, she(invite) all friends to her birthday. 7.My father (listen) to the radio everyday. 8.He (do) Math now but his sister( play) the piano. 9.Jane (play) chess with his father at present. 10. Listen! The boy (play) the guitar. 11.Our friends (come) here soon. 12.My father never (drink) coffee, he ( enjoy) drinking strong tea. 13.I usually (go) to school by bike, but tomorrow I (go) to school by bus. 14.He (visit) his grandparents next week. 15.We (not/ invite) many friends to the party tonight. 16. Lan (not be) in her room at the moment. She ( work) in the garden. 17. (you/be) free next Sunday morning, Ba?- No, I ( visit) my grandparents. 18 She (not go)to the movie theater tomorrow evening. She (stay) at home and watch TV. 19. Who ( you/live) with now? – I( live ) with my parents ,but my family (move) to Nha Trang next month. 20. Let’s go to Lan’s birthday party. Ok, I (pick) you up at 7 o’clock tonight. 21. What ( you/do) on your next birthday?- I (invite) some of my friend. 2:for,since or ago 10 . How many years is it ___ you graduated from junior high school? 11. Things have changed a lot…………….our previous meeting. 12. It's been raining…………….four o'clock. 13. I'm sure he's been watching us …………….we came in. 14. He'd been here…………….over an hour when we arrived. 15. I've been trying to fix this computer…………….early this morning. 16. He hasn't had anything to eat…………….nearly a week. 17. It's three years…………….he started learning German. 18. He's been collecting stamps…………….the past twenty years. 19. Nobody has seen him…………….last Friday. 20. It has been foggy…………….some days. 21. He has been fishing…………….six o'clock. 22. They've been living in France …………….eight years. 23. The pilots have been on strike…………….two months. 24. We've had terrible weather…………….Saturday. 25. I've known Tom…………….1990. 26. We have been waiting for the bus…………….half an hour. 27. She hasn't lost a match…………….April. 28. Things have changed…………….she's become headmaster. 29. The police have been looking for him…………….a month. 30. Our dog has been ill…………….two days. 31. I've been looking for this book…………….a long time. 32. I've been working…………….I got up. 33. The kettle has been boiling…………….ten minutes 34. They have been living in Madrid ……………..1972. 35 Nam has never been to the bar…………………. nearly two years

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