xì

hết cả đề á?

chò oi, nhìn cái bánh zễ thuôn thặc đấy 

vẽ đẹp v

ý c

their mother knew they were doing something wrong so the children were quiet 

Lan didn't go to school because she was sick 

i have the first time i have ever talked to a foreigner

Ho Chi Minh is the most crowded city in Vietnam

it's was our first time to taste fish and chips

Living in Hai Phong is more expensive than living in Bac Giang

a) \(\left|x\right|< 2\)

\(\Rightarrow\)\(\left|x\right|=\left\{0,\pm1\right\}\)

b) \(\left|x\right|>1\)

\(\Rightarrow\left|x\right|=\left\{\pm2,\pm3,\pm4,...\right\}\)

ý a) sao đang \(a,b,c\) lại thành \(x,y,z\) ? :DD??

sao dạo này hoc24 nhiều trùm copy ms nổi zậy?