原式配方得：x2+xy+y2/4 + 3y2/4-3y+3=0即得：(x+ y/2)2+ 3(y/2 -1)2=0则有：x+ y/2=0且y/2 -1=0解得：y/2=1即y=2,x=-y/2=-1所以：x的y次幂=(-1)2=1