It depends on what "easy" actually refers to. When we say it's easier to program in language X than language Y, we don't speak about the cleverness behind the X

It depends on what "easy" actually refers to. When we say it's easier to program in language X than language Y, we don't speak about the cleverness behind the X compiler. The author thinks that his way to "code" a solution to the quadratic equation is easier. He proposes an alternative "language" for teaching this.