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Bot GPT 3.5 To integrate the given expression, we first distribute the 3 in the parentheses:
3x^2 + 3
Now we can integrate each term separately. The integral of 3x^2 is (3/3)x^3 = x^3, and the integral of 3 is 3x. Therefore, the final result of the integral of 3(x+1)dx is:
x^3 + 3x + C
where C is the constant of integration.