Phân tích đa thức thành nhân tử: a. (x+1).(y-2)-(2-y)^2 b. (x-5)^3-2y.(5-x)^2 c. (2x-6)(4x^2+1)-(2x-6)(7x+3)-(2x-6)(x+12)

Cho x + y = 4 , xy = -5 Tính : a) x^2 + y ^2 b) x^3 + y^3 c) x^4 + y^4 Liên quan đến hằng đẳng thức

Giải thích giúp mk lun nhá . mk vote 5* cau 3 nha

Giúp em với ạ . Em xin cảm ơn trc

1. Hanoi is __________ capital of Vietnam. A. an B. a C. the D. one 2. He doesn’t have _________ experience of working in an office. A. much B. some C. an D. the 3. I studied chemistry at _________ university. A. the B. a C. an D. any 4. I’ll have ____________ bath as soon as I get home. A. a B. the C. an D. one 5. He has just bought ____________ expensive furniture. A. an B. some C. the D. a few 6. What did you have for __________ breakfast ? A. the B. no article C. an D. a 7. Can you play ________ piano ? A. a B. an C. the D. one

tìm x biết : √6 − 4x + x ^2 − x = 4

chứng minh Mx//Ny hình có r nhé

Vẽ đậu mầm chs game Ai cần nhóm của tôi thì tôi cho

Ryan: Hi, Molly. How are you? You............(sound) really happy. Molly: I am. I........(have) a great time. Ryan: Where are you? Molly: I.........(stay) at my cousin Lily's house. Ryan: Lily? Ah, yes. Now I.................(remember). She's the one who...........(have) a house near the coast. Molly: That's right. Well, in fact, the house..............(belong) to a good friend of my cousin. She always......(let) her stay when she...........(want). Ryan: And what exactly...........you..........(do) now? Molly: I........(get) the table ready for dinner. Lily..........(cook) really well. She..........(make) something special for tonight. It............(smell) great. Ryan: Stop! You.........(make) me hungry. Anyway, I............(need) to go now. somebody...........(call) me. I'll phone again soon. Molly: Ok.

giúp tớ vs, chỉ cần ghi đáp án abcd thôi, làm nhanh nhé