Let　Q　be　a　quiver　of　type　(A)　over　tilde　(n).　Let　alpha　=　alpha(1)+alpha(2)+...+alpha(s)　be　the　canonical　decomposition.　For　the　polynomials　M-Q(alpha,　q)　that　count　the　number　of　isoclasses　of　representations　of　Q　over　F-q　with　dimension　vector　alpha　,　we　obtain　a　precise　relation　between　the　degree　of　M-Q(alpha,　q)　and　that　of　Pi　M-s(i=1)Q(alpha(i),q)　for　an　arbitrary　dimension　vector　alpha　.