刚刚开始学的c++就碰壁了。。。。总显示term does not evaluate

#include <iostream>
#include <cmath>
using namespace std;
int main()
{
double x,y;
x=3;
cout<<"x=3"<<endl;
cout<<"y="<<(sqrt(x)-6(x+1/x)+(x-3.2)*(x-3.2))/((x+7.7)*(x+7.7)*(x+7.7))<<endl;
return 0;
}