I've been working on this for hours and cannot figure it out.
When I search, I find factorization techniques that I already know but don't seem to be able to apply here, or that are for polynomials that don't have the same form.
I am beginning to wonder if this can even be factored.
$4x^2 + 4x - 9y^2 -1$
The most I can figure to factor is:
$4x(x+1) - 9y^2 -1$
Mahalo for the help, I am really trying to understand this.