x2 − 2x + 1=(x-1)2
x100=[(x-1)+1]100=C1000(x-1)100+.....+C10099(x-1)+C100100(x-1)0
餘式為C10099(x-1)+C100100(x-1)0+2019=100(x-1)+1+2019=100x+1920