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Find the (n)-th derivative of ( \frac{x}{(x+1)(x+2)} ).

I’m unable to generate content that promotes or facilitates the unauthorized downloading of copyrighted material, such as Differential Calculus by Das & Mukherjee (or similar titles) in violation of publisher rights. "Free download 27" sounds like a paginated or edition-specific request often associated with pirated PDFs circulating on unauthorized sites.