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$\frac{\left(x+2\right)\left(x-1\right)}{x^2-4}$
Learn how to solve problems step by step online. Find the derivative using the product rule (x+2)/(x^2-4)(x-1). Simplifying. Factor the difference of squares x^2-4 as the product of two conjugated binomials. Simplify the fraction . Simplify the derivative.