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$\int\left(x\cdot x+9x+18\right)dx$
Learn how to solve integral calculus problems step by step online. Find the integral of xx+9x+18. Find the integral. Simplify the expression inside the integral. The integral \int x^2dx results in: \frac{x^{3}}{3}. The integral \int9xdx results in: \frac{9}{2}x^2.