View Compilation Error

0_0_7695858_17517.cpp: In function `int main()':
0_0_7695858_17517.cpp:7: error: `pow' undeclared (first use this function)
0_0_7695858_17517.cpp:7: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_7695858_17517.cpp:7: error: `sqrt' undeclared (first use this function)