BÀI 1 4ĐIỂM 2 1 110 5 5 3 3 5 31 3 3 9 155...
2 .3
4 .9
5 .7
25 .49
2 .3
2 .3
5 .7
5 .7
B
b/
6
3
9
3
12
6
12
5
9
3
9
3
3
2 .3
4 .9
5 .7
25 .49
2 .3
2 .3
5 .7
5 .7
B
b/
6
3
9
3
12
6
12
5
9
3
9
3
3