How to integrate 5x^2?

Firstly we integrate x^2 with respect to x which is (x^3)/3 as we integrate polynomials by adding a power then dividing by that power, (x^n+1)/n+1.Then we multiply by the 5 we have from earlier which gives us (5x^3)/3.Lets not forget the integration constant (+c) as if you dont put this you will lose a mark.