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$\int\left(\left(1+x^2\right)\cdot \left(1+x^2\right)-\left(2x+3\right)^2\right)dx$
Learn how to solve integral calculus problems step by step online. Find the integral of (1+x^2)(1+x^2)-(2x+3)^2. Find the integral. Simplify the expression inside the integral. The integral \int\left(1+x^2\right)^2dx results in: x+\frac{2}{3}x^{3}+\frac{x^{5}}{5}. Gather the results of all integrals.