I'm having a tough time finding the Maclaurin series (we have to use the binomial series) for

$\displaystyle

f(x)=\frac{1}{\sqrt [3]{1+x^2}}

$

Am I supposed to try to make it fit the form $\displaystyle (1+x)^k $? If so, I'm confused about how to do so. Any help walking me through this step by step would be greatly appreciated. Thanks!