the quadratic formula

9:49

9:49

9:34

8:15

3:30

8:21

9:37

16:54

1:11:03

20:59

4:50

35:28

6:23

11:28

6:03

کوتاه

8:10

16:17

15:57

15:58

10:23

1:46

11:43

15:48

12:36

9:04

22:07

14:59

14:36

8:26

3:39

3:27

2:06

کوتاه

8:32

1:13

7:25

1:20

2:02

6:57