若丨x+y-1丨与丨x-y+3丨互为相反数,则(x+y)^2007的值为多少?

来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/24 06:53:35
若丨x+y-1丨与丨x-y+3丨互为相反数,则(x+y)^2007的值为多少?若丨x+y-1丨与丨x-y+3丨互为相反数,则(x+y)^2007的值为多少?若丨x+y-1丨与丨x-y+3丨互为相反数,

若丨x+y-1丨与丨x-y+3丨互为相反数,则(x+y)^2007的值为多少?
若丨x+y-1丨与丨x-y+3丨互为相反数,则(x+y)^2007的值为多少?

若丨x+y-1丨与丨x-y+3丨互为相反数,则(x+y)^2007的值为多少?
因为丨x+y-1丨与丨x-y+3丨互为相反数 所以x+y+1=0 x-y+3=o 两个方程解的x=-2 y=1 所以x+y=-1 (x+y)^2007=-1