若|x+y-1|与|x-y+3|互为相反数,则(x+y)的2001次方=

2025-05-01 20:07:51
推荐回答(2个)
回答1:

1

回答2:

x+y-1=0
x-y+3=0
x=-1
y=2
(-1+2)2001=1