#include<bits/stdc++.h>
#define ll long long
#define maxn 1000005
#define inf 1e18
using namespace std;
ll n,m,a,b,c,g,x1,x2;
ll gcd(ll x,ll y)
{
	if(y==0)return x;
	else return gcd(y,x%y);
}
void p(ll x,ll y)
{
	if(y==0)return;
	bool f=false;
	g=gcd(abs(y),abs(x));
	if(y<0)f^=true;
	if(x<0)f^=true;
	if(f==true)cout<<"-";
	if(g==abs(x))cout<<abs(y)/g;
	else cout<<abs(y)/g<<"/"<<abs(x)/g;
}
bool pd(ll x)
{
	ll xx=sqrt(x);
	if(xx*xx==x)return true;
	else return false;
}
void xs(ll x)
{
	for(int i=5000;i>=2;i--)
	{
		if(x%(i*i)==0)
		{
			x1=i;
			x2=x/(i*i);
			return;
		}
	}
	x2=x;
}
int main()
{
//	freopen("uqe9.in","r",stdin);
//	freopen("uqe9.out","w",stdout);
	scanf("%lld%lld",&n,&m);
	for(int i=1;i<=n;i++)
	{
		scanf("%lld%lld%lld",&a,&b,&c);
		if(b*b-4*a*c<0)printf("NO");
		else
		{
			if(b*b-4*a*c==0)
			{
				p(a*2,-b);
				if(b==0)printf("0");
			}
			else
			{
				if(pd(b*b-4*a*c)||b*b-4*a*c==0)
				{
					if(a*2<0)
					{
						p(a*2,-b-sqrt(b*b-4*a*c));
						if(-b-sqrt(b*b-4*a*c)==0)printf("0");
					}
					else 
					{
						p(a*2,-b+sqrt(b*b-4*a*c));
						if(-b+sqrt(b*b-4*a*c)==0)printf("0");
					}
				}
				else
				{
					p(a*2,-b);
					if(b!=0)printf("+");
					x1=0;x2=0;
					xs(b*b-4*a*c);
					if(x1==0)printf("sqrt(%lld)/%lld",x2,abs(a*2));
					else
					{
						g=gcd(abs(x1),abs(2*a));
						if(g==abs(2*a))
						{
							if(abs(x1)/g!=1)printf("%lld*sqrt(%lld)",abs(x1)/g,x2);
							else printf("sqrt(%lld)",x2);
						}
						else
						{
							if(abs(x1)/g!=1)printf("%lld*sqrt(%lld)/%lld",abs(x1)/g,x2,abs(a*2/g));
							else printf("sqrt(%lld)/%lld",x2,abs(a*2/g));
						}
					}
				}
			}
		} 
		printf("\n");
	}
	return 0;
}