2004^3-2*2004^2-2002 = 2004^2 (2004-1) - 2004*(2004-1) - 2*(2004 - 1)= (2004+1) * (2004-2) * (2004-1)2004^3-2004^2-2003 = 2004^2 (2004-1) - (2004-1) = (2004 +1 ) * (2004-1) * (2004-1)原式 = [(2004+1) ...