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$\int\frac{x^4-1}{x^2+1}dx$
Learn how to solve integral calculus problems step by step online. Find the integral of (x^4-1)/(x^2+1). Find the integral. Simplify the expression inside the integral. The integral \int x^2dx results in: \frac{x^{3}}{3}. The integral \int-1dx results in: -x.