Abstract
In this paper, we deal with the periodic nature and the form of the solutions of the following systems of rational difference equations
Xn+1 = x(n-1)/+/- x(n-1)y(n) - g, y(n+1) = y(n-1)/+/- y(n-1)x(n) - f,
with a nonzero real numbers initial conditions and f, g are nonzero real numbers with f, g not equal 1.