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$\int\left(x+2x\cdot x\right)dx$
Learn how to solve integral calculus problems step by step online. Find the integral of x+2xx. Find the integral. Simplify the expression inside the integral. The integral \int xdx results in: \frac{1}{2}x^2. The integral \int2x^2dx results in: \frac{2}{3}x^{3}.