Hello, jonarmani!

I have the function

I tried pulling an "n-1" out like so:

. Illegal!

But when I run test cases on it against the original, it doesn't come out right.

I'm pretty positive I can't take an "n^2" out to simplify it.

Is that the simplest I can express that equation?

Why not add the four polynomials?

. . . . . . . .