Attractivity of the recursive sequence xn+1=(A−Bxn−2)/(C+Dxn−1)xn+1=(A−Bxn−2)/(C+Dxn−1)

In this paper, we investigate the global attractivity of the difference equationxn+1=A−Bxn−2C+Dxn−1,n=0,1,…,where A, B are nonnegative real numbers, C, D   are positive real numbers and C+Dxn−1≠0C+Dxn−1≠0 for all n ≥ 0.