Which expression represents the integral ∫(x+2)2dx\int (x+2)^2 dx∫(x+2)2dx after using u=x+2u = x+2u=x+2?
∫u2du\int u^2 du∫u2du
∫u3du\int u^3 du∫u3du
∫(u−2)2du\int (u-2)^2 du∫(u−2)2du
∫2udu\int 2u du∫2udu