(y分之x-x分之y)[(x+y分之x的平方y）+（x+y分之xy的平方)]其中x=根号3+1,y=根号3-1=(x²-y²)/(xy)×[x²y/(x+y)+xy²/(x+y)]=x(x-y)+y(x-y)=x²-xy+xy-y²=x²-y²=(x+y)(x-y)=(√...