Giúp em với nếu làm được em vote 5 sao cho

Thu gọn biểu thức : A = (x - 2) . (x + 2) + (x - 3) . (x + 3) - x . (2x +1) - 4 B = (5a - b + 1) . (5a + b - 1) - 24 . (a + 1)^2 + b^2 - 1 C = (a + b + c) . (a + b - c) + (a + c + b) . (a + c - b)

em bí quá em mới học đc 1 hôm th

các bn giải thik CHI TIẾT giùm mik cách làm nha! NHANH nha!! tks

https://img.hoidap247.com/picture/question/20210705/tini_1625470394720.jpg

Mik sẽ đánh giá 5 sao cho Giúp mik nhé

1. I think you are enjoying the party tomorrow. A B C D 2. I don’t enjoy going on vacation as much as I uses to. A B C D 3. Would you mind to give me some advice about buying a computer? A B C D 4. You ought to improving your French before going to work in Paris. A B C D 5. They lived at Barker Street two years ago. A B C D ----Have you renteda flat already? A B C D 14. I won’t feed your dog again. He always tries biting me when I come near him. A B C D 15. He decided puttingbroken glass on top of his wall to prevent boys from climbing over it. A B C D 16. It is essential that this matter should be keep out of the newspaper. A B C d ai giúp em vài câu này với ạ!!!giải thik cho em tại sao nó lại ra đáp án đấy vs ạ đừng ghi mỗi đáp án

Bác Nam uốn một sợi dây thép thành một hinh chữ nhật có diện tích là 768cm^2. Tính độ dài sợi dây thép đó, biết rằng tổng độ dài hai cạnh hình chữ nhật gấp hiệu độ dài hai cạnh đó 7 lần. Làm giúp bài 3 vớiiiiiiii ú hu hu hu hu~~~~~

Grade 1 spelling practice exercise is a document that includes 4 small articles on grade 1 spelling practice, helping grade 1 children practice listening, spelling as well as word practice skills. more practice. This is a reserve of reference materials for parents, as well as professors' graduate students, to help their children's learning be more effective. Please refer to the detailed content.dịch hộ em

.Phát âm(chữ phát âm là chữ cái in hoa ) 1.A.Exciting B.Excellent C.Experience D.Expensive 2.A.pOttery B.cOllect C.melOdy D.mOnopoly 3.A.hEArd B.bIrd C.wOrld D.pictUre .chia ĐT trong ngoặc 1.In my country ,it(not rain) much in winter. 2.You ought (not/go) out to late. 3.Did you use(walk) to school when you were small? .Sắp xếp 1.it/boring/because/finds/time/models/Jim/takes/lots of/making/. 2.you/up/Will/ice-skating/future/in/take/the/? .Viết lại câu 1.What is your hobby? =What hobby................................? 2.We all find painting interesting because it's a creative activity. =We all think.................................................. 3.It isn't necessary to finish the work today =............................................................ (Nếu có thể thì dịch ra hộ mk nha,thanks!!)