#include <bits/stdc++.h>
using namespace std;
int t, m, a, b, c, x, y;
string s;
int main() {
cin >> t >> m;
while (t--) {
cin >> a >> b >> c;
int delta = (b * b - 4 * a * c);
if (delta < 0) {
cout << "NO\n";
continue;
}
int s1 = -b, s2 = (a << 1);
if (s2 < 0)
s1 *= -1, s2 *= -1;
x = __gcd(abs(s1), abs(s2));
s1 /= x, s2 /= x;
if (delta == 0) {
cout << s1;
if (s2 != 1)cout << "/" << s2;
cout << "\n";
continue;
}
int s3 = delta, s4 = 1;
for (int i = 2; i * i <= delta; i++) {
if (s3 % (i * i) == 0) {
s3 /= (i * i);
s4 *= i;
}
}
int s5 = abs(a << 1);
x = __gcd(s4, s5);
s4 /= x, s5 /= x;
if (s2 == s5)
if (s3 == 1) {
y = s1 + s4;
int h = s2;
x = __gcd(abs(y), abs(h));
y /= x, h /= x;
cout << y;
if (h != 1)cout << "/" << h;
cout << "\n";
continue;
}
if (s1) {
cout << s1;
if (s2 != 1)cout << "/" << s2;
if (s4 > 0)cout << "+";
}
if (s3 == 1 && s4 == 1)cout << "1";
else if (s3 == 1 && s4 == -1)cout << "-1";
else if (s3 == 1)cout << s4;
else if (s4 == 1)cout << "sqrt(" << s3 << ")";
else if (s4 == -1)cout << "-sqrt(" << s3 << ")";
else cout << s4 << "*" << "sqrt(" << s3 << ")";
if (s5 != 1)cout << "/" << s5;
cout << "\n";
}//ans is s1/s2+s4*sqrt(s3)/s5
return 0;
}