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Simplify the expression inside the integral
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$\int_{0}^{3}9xdx+\int_{0}^{3}-x^2dx+\int_{0}^{3}-2x^2dx$
Learn how to solve problems step by step online. Integrate the function 4x-x^2-2x^25x from 0 to 3. Simplify the expression inside the integral. The integral \int_{0}^{3}9xdx results in: \frac{81}{2}. The integral \int_{0}^{3}-x^2dx results in: -9. The integral \int_{0}^{3}-2x^2dx results in: -18.