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$\int\left(4x+x^2\right)^2dx$
Learn how to solve integral calculus problems step by step online. Find the integral of (4x+x^2)^2. Find the integral. Rewrite the integrand \left(4x+x^2\right)^2 in expanded form. Expand the integral \int\left(16x^{2}+8x^{3}+x^{4}\right)dx into 3 integrals using the sum rule for integrals, to then solve each integral separately. The integral \int16x^{2}dx results in: \frac{16}{3}x^{3}.