m=(2007-1)^2+[(2007-1)2007]^2+2007^2 =2007^2-2*2007+1+(2007^2-2007)^2+2007^2 =2007^4-2*2007^3+3*2007^2-2*2007+1 =2007^4+2*2007^2+1-2*2007(2007^2+1)+2007^2 =(2007^2+1)^2-2*2007(2007^2+1)+2007^2 =(2007^2+1-2007)^2