Single Variable Calculus

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Integrate the Square of a Binomial using Substitution

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Compute $\int (3x+1)^2 \ dx$.

A

$\frac{(3x+1)^3}{3}+C$

B

$6(3x+1)+C$

C

$\frac{(3x+1)^3}{9}+C$

D

$(3x+1)^3+C$