Perturbation Theory on $x^5+5x-5=0$

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One of the questions in my exercises consists of a question on the perturbation theory. The question is to use the perturbation expansion to approximate the root of this equation; $$x^5+5x-5=0$$ How would I integrate $\epsilon$ into this function to simplify things. If anyone could recommend me a link on perturbation expansions I would also be really grateful.