I need to factor this polynomial in order to find the zeros:
f(x) = x^5 - 3x^3 - x^2 - 4x - 1
my book shows it factored down to this:
f(x) = (x^2 + 1)(x^3 - 4x - 1)
I don't understand how they got to that, nor how to solve for the zeros. (neither steps are shown in the book)
