∵方程x2+x-1=0的两根为x1,x2,x= ?1± 5 2 ,当x1= ?1+ 5 2 ,x2= ?1? 5 2 ,则x1*x2= ?1+ 5 2 ;当x2= ?1+ 5 2 ,x1= ?1? 5 2 ,则x1*x2= ?1+ 5 2 .故答案为