HOC24
Lớp học
Môn học
Chủ đề / Chương
Bài học
1my bike is back
2 thế are his shoes\
3this is veronica is cat
4 that is our picture
1this is thu and mon is computer
-1/2x3y.4xy
=(-1/2.4).(x3x).(yy)
=-2.x4y2(bậc 6)
bai tap1
phan biet nam chieu va bac chieu (thoi gian hinh thanh nguoi dung dau )
neu dac diem chung cua lop luong cu