问题
解答题
若-|x+1|-(y-1)2=0,求x2005-y2004+x2003-y2002+…+x3-y2+x的值.
答案
∵-|x+1|-(y-1)2=0,
∴-|x+1|=0,即x+1=0,
解得x=-1;
y-1=0,
解得y=1;
∴x2005-y2004+x2003-y2002+…+x3-y2+x,
=(-1)2005-12004+(-1)2003-12002+…+(-1)3-12+(-1),
=-1-1-1-1-…-1-1-1,
=-2005.