Solve the Equation by the Square Root Property $$( 7 x + 5 ) ^ { 2 } = 14$$

Multiple Choice

Solve the equation by the square root property.
- $$( 7 x + 5 ) ^ { 2 } = 14$$

A) $\left\{ \pm \frac { \sqrt { 3 } } { 7 } \mathrm { i } \right\}$
B) $\left\{ \frac { - 5 \pm \sqrt { 14 } } { 7 } \right\}$
C) $\left\{ \frac { - 5 + \sqrt { 14 } } { 7 } \right\}$
D) $\{ - 5 \pm \sqrt { 14 } \}$