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$\int\left(3\left(x+1\right)^2+x+1-1\right)dx$
Learn how to solve integral calculus problems step by step online. Find the integral of 3(x+1)^2+x+1+-1. Find the integral. Simplify the expression inside the integral. The integral \int3\left(x+1\right)^2dx results in: \left(x+1\right)^{3}. The integral \int xdx results in: \frac{1}{2}x^2.