This paper integrates the Rosenau-KdV equation with power law nonlinearity that appears in applied mathematics. There are several approaches that are applied to study this equation. The ansatz method is applied to obtain the topological soliton solution of this equation. The G'/G method as well as the exp-function method are also applied to extract a few more solutions to this equation. The constraint relations also all naturally fell out during the course of derivation of the solution.