#include<stdio.h>
#include<math.h>
int main()
{
double x1,x2,x,y1,y2,y;
x1=10;
x2=-10;
y1=2*x1*x1*x1-4*x1*x1+3*x1-6;
y2=2*x2*x2*x2-4*x2*x2+3*x2-6;
do
{
x=(x1+x2)*0.5;
y=2*x*x*x-4*x*x+3*x-6;
if(y>=0)
x1=x;
if(y<0)
x2=x;
}
while(fabs(x1-x2)>=0.0001);
printf("%f",x2);
return 0;
}