quadraticequations

5:56

12:29

24:06

9:06

7:57

9:15

4:05:16

6:22

5:27:48

11:54

22:30

31:55

6:32

7:19

7:52

13:07

11:33

16:32

3:05

7:32

16:27

10:43

6:24

12:50

4:28

14:56

10:45

9:30

6:44

2:17

19:55

15:34

4:56

14:05

16:57

16:30

11:03

5:53

4:13

6:45

2:40

7:34

4:44

14:31

45:44

5:34

1:01:38

5:28

4:51

10:15

9:14

4:28

13:10

15:43

32:15

7:16

6:08

9:45

6:40

6:14