Solve the Equation by Completing the Square $$x ^ { 2 } + 18 x = - 58$$

Multiple Choice

Solve the equation by completing the square.
- $$x ^ { 2 } + 18 x = - 58$$

A) $\{ - 18 + \sqrt { 58 } \}$
B) $\{ - 9 - \sqrt { 23 } , - 9 + \sqrt { 23 } \}$
C) $\{ 9 + \sqrt { 23 } \}$
D) $\{ 9 - \sqrt { 58 } , 9 + \sqrt { 58 } \}$