Giải phương trình $(7x)^{2}$ = 144

Help meee. Mọi người giúp mik vs ạ, mik sắp nộp rùi.

giải nghĩa các từ sau :sáng dạ ,tri thức , luyện tập, thực hành

Bài tập: Rewrite these sentences 1.She hasn't phoned me for a week. 2.I haven't seen him for 2 years. 3.Nam hasn't talked to Mai for five days 4.They haven't written to each oder for a year 5.It's a week since he last visited me. 6.It's an hour since he last used his computer 7.It's ages since I last did his homework. 8.The Brown began to study VietNamese your months ago. 9.I started to use the conputer 20 minutes ago. 10.The children began playing soccer at 4p.m 11.Ba began learning French in 2004. 12.This is my first visit to Japan 13.He has never eaten Chinese food before 14.That girl has never been punished before 15.I've never talked a foreigner before 16.This is my first game of water-polo.I have ever play. 17.This is the first time he has made such a big mistake 18.The last time jame played video games was 30 minutes ago 19.How long is it since he found a new job? 20.It's a month since I saw Chris

Tìm gtnn của biểu thức: A = (x-1)^4+(x-3)^4+6(x-1)^2.(x-3)^2

Các tay to cover lại tranh bên dưới đi ạ :D

Giải bất phương trình x-2/6-x-1/3=<x/2 (x-2)(2x+1)>=0

Tìm Min hoặc Max của A= căn x +2/căn x +4 B=căn x -1 / căn x+1

Dựa vào các thì đã học hãy làm những câu dưới đây

Nhìn hình kể chuyện bằng tiếng anh ( lưu ý ko viết quá dài)