RÚT GỌN BIỂU THỨC a) A= (x-y) (x^2 + xy + y^2) - (x+y) (x^2 - xy +y^2) b) B= (a^2b^2 -5a) (a^4b^4 + 5a^3b^2 + 25d^2) c) C= (2x + 3y) (4x^2 - 6xy + 9y^2) d) D= (y + 2) (y^2 - 2y + 4)

Cần lời giải gấp Giải và vẽ hình giúp mik nha

Giúp e giải câu 20 -->37 vs ạ ,em cảm ơn mn nhìuu🥰

(sinx + √3cosx) ² = 5 + cos (4x + $\frac{\pi}{3}$ ) có mấy nghiệm dương < 10

1.he apartment is small. The rent is cheap. _____________________________________________________________________. 2.Tung spends much money and time with his girlfriend, he becomes happy. ____________________________________________________________________. 3.The joke is talented. The laughter is loud. ____________________________________________________________________. 4.She goes to bed late. She feels tired. _____________________________________________________________________. 5.As her father gets older, he wants to travel less. ____________________________________________________________________. 6.As this road gets busy, it becomes dangerous. _____________________________________________________________________. 7.They are young, they learn easy. _____________________________________________________________________. 8.The hotel is cheap, the services are bad. _____________________________________________________________________. 9.He uses much electricity, his bill will be high. _____________________________________________________________________. 10.When technology is modern, the world’s environment becomes worse and worse. _____________________________________________________________________

Bài 1: Cho 2,8g hỗn hợp CuO, MgO, Fe2O3 tác dụng vừa đủ với 50 ml dd H2SO4 1M. Cô cạn dung dịch sau phản ứng thu được m gam muối khan. Giá trị của m là:

Cần gấp giải giúp mik bài bài này vs

Viết chương trình phần tích một số nguyên n thành tích của các thừa số nguyên tố.(pascal nha)

Bài 1: Cho 4,48g oxit bazơ CaO tác dụng vừa đủ với axit H2SO4. Sau khi cô cạn sản phẩm, thu được bao nhiêu gam muối khan?

Choose the best answer A,B,C or D to complete the sentences: 1. I................ Tom and Jerry many times. A.see B.saw C.am seeing D.have seen 2.My Favorite..............Is Swimming. A.Game B.Match C.Activity D.Sport 3.He First.........Ho Chi Minh City. A.Go B.Went C.Visited D.Ben To 4.I'd Like..........A Picnic. A.Have B.Has C.Having D.To Have 5.The River Is The........River In The World. A.High B.Longest C.Longer D.Highest 6.Lan Doesn't Like Watching Tv.She.........Watches Tv.A.Always B.Usually C.Never D.Often 7 You Can Watch Harry Potter On Tv.........You Can Read It. A.Or B.When C.But D.So 8. ..........Do You Go To The Gym?-By Bus. A.What B.How C.Why D.Which 9.He......Out With His Friends Last Week A.Is Going B.Goes C.Has Gone D.Which 10.It's Getting Light.Shall I Turn.......The Lights To Save Electricity. A.Off B.On C.Up D.In