Solve the Equation by Completing the Square $$7 x ^ { 2 } - 2 x - 4 = 0$$

Multiple Choice

Solve the equation by completing the square.
- $$7 x ^ { 2 } - 2 x - 4 = 0$$

A) $\left\{ - 4 , \frac { 30 } { 7 } \right\}$
B) $\left\{ \frac { 7 - \sqrt { 29 } } { 49 } , \frac { 7 + \sqrt { 29 } } { 49 } \right\}$
C) $\left\{ \frac { - 1 - \sqrt { 29 } } { 7 } , \frac { - 1 + \sqrt { 29 } } { 7 } \right\}$
D) $\left\{ \frac { 1 - \sqrt { 29 } } { 7 } , \frac { 1 + \sqrt { 29 } } { 7 } \right\}$