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$\int\left(x^2+7\right)\left(x^2+3\right)dx$
Learn how to solve integral calculus problems step by step online. Find the integral of (x^2+7)(x^2+3). Find the integral. Rewrite the integrand \left(x^2+7\right)\left(x^2+3\right) in expanded form. Expand the integral \int\left(x^{4}+10x^2+21\right)dx into 3 integrals using the sum rule for integrals, to then solve each integral separately. The integral \int x^{4}dx results in: \frac{x^{5}}{5}.