From Cubics to Complex Numbers

We all know the formula for solving quadratics, but there is also a formula for solving cubics. It's a pretty piece of mathematics, and its discovery, in the sixteenth century, is thought by many to be the start of modern mathematics, because it sowed the seed that led to complex numbers. In this video I show how to solve cubic equations, and follow the story of the development of complex numbers.

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Hello! Im from Brazil, and i am studying olimpiad's mathematic to get a medal at OBM and maybe, go to IMO. I was with difficult in geometry with complex numbers, but after your video (a video you sent 2 years ago) i understood! Dont stop making your videos, they are very good and could help another students with the same problem as me!