تشکیل معادله و حل آن

4:38

3:08

3:15

2:46

25:21

1:11:28

51:00

2:02:42

2:04:26

1:56

9:27

5:25

57:16

2:56

5:15

14:50

12:59

12:59

9:10

1:56:15

18:46

10:52

11:41

6:01

3:11

13:39

48:16

3:31

26:03

21:57

1:26:16

20:19

16:30

48:48

4:39

9:06

14:06

18:24

1:59

58:21