若/3x+1/与（y+1）2次方互为相反数,则xy等于

若/3x+1/与（y+1）2次方互为相反数,则xy等于
若/3x+1/与（y+1）2次方互为相反数,则xy等于

若/3x+1/与（y+1）2次方互为相反数,则xy等于
/3x+1/与（y+1）2次方互为相反数
/3x+1/+（y+1）^2=0
3x+1=0,y+1=0
x=-1/3,y=-1
xy=-1/3×(-1)=1/3