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$\int\left(5x+4\right)\left(5x-4\right)dx$
Learn how to solve integral calculus problems step by step online. Integrate the function (5x+4)(5x-4). Find the integral. Rewrite the integrand \left(5x+4\right)\left(5x-4\right) in expanded form. Expand the integral \int\left(25x^2-16\right)dx into 2 integrals using the sum rule for integrals, to then solve each integral separately. The integral \int25x^2dx results in: \frac{25}{3}x^{3}.