12:59You probably haven't solved a quartic equation like this before!blackpenredpen68.6K viewsView & Download
6:58An interesting quartic equation solved with a nice trick! Not the usual type!!!SyberMath9.8K viewsView & Download
45:04Why There's 'No' Quintic Formula (proof without Galois theory)not all wrong645.1K viewsView & Download
