Flabbergasted as to how to go about doing this... Would really appreciate some help. I've only ever been asked to do this with quadratic and cubic polynomials.

$\displaystyle

f(x) = 2(x^2 -1)^\frac{1}{5}

$

Edit: Oops, yeah, I want to solve for f(x) = 0. I'm trying to find the x-intercepts.