This section is a quick foray into math history, and the history of polynomials!
In mathematics the most common form of competition was to have two (or more) mathematicians stand on stage, sometimes with a slate tablet to work with, but often not. Then another mathematician (who was not a challenger) would provide a large polynomial to be factored. The first mathematician in the competition that could factor the polynomial correctly won. This was such a big deal that mathematicians would often covet solution methods, never publishing them or telling anyone about them, in order to keep their edge. They would even devote (considerable) energy to developing seemingly impossible to factor polynomials that they knew the solutions to, in case they were challenged on the street to a polynomial factor-off!
Despite this historical context of polynomial factoring, one might imagine that the fact that a polynomial was factorable had been known for quite some time, even if factoring specific polynomials might be challenging. In fact, it wasn’t until 1806 that someonehad finally fully proven that was the case, a little over two hundred years ago. Despite being something of constant interest and a conjecture for centuries, many heavy hitting mathematicians had attempted to prove the theorem and come up short, including people like Euler, Lagrange, and Laplace.
Even Gauss (one of the most famous mathematicians in history) took a swing early in his career, when he was 22. Despite his first proof having an important gap in its work, Gauss was so fascinated by the problem that, in 1816, he proved it an entirely different way than the 1806 proof, and then later in that same year he published yet another completely different proof. Gauss may not have proven it right the first time, but he decided (purely for fun) to prove something that had taken centuries to figure out, two fundamentally different ways in the same year, thus continuing his legacy of making everyone else look bad.