mfultz
January 20, 2014
1748
10:29
Quadratics #2A
mfultz
1600
16:59
Quadratics #2B
mfultz
1684
17:13
Quadratics #3
mfultz
1599
21:37
Solving Quadratics U...
jbarnes
1415
14:10
Quadratics #2
mfultz
1760
07:12