It is shown that the following (k + l)-order nonlinear difference equation xn = xn−kxn−k−l xn−l (an + bnxn−kxn−k−l) , n ∈ N0, where k, l ∈ N, (an)n∈N0 , (bn)n∈N0 and the initial values x−i, i = 1, k + l, are real ...