View Compilation Error

0_0_39356181_19162.cpp: In function 'double fanc(int)':
0_0_39356181_19162.cpp:8:16: error: 'pow' was not declared in this scope
    8 |     return 6 * pow(x, 7) + 8 * pow(x, 6) + 7 * pow(x, 3) + 5 * pow(x, 2) - y * x;
      |                ^~~