Solve the Equation Using the Quadratic Formula $$x ^ { 2 } + x + 4 = 0$$

Solve the equation using the quadratic formula.
- $$x ^ { 2 } + x + 4 = 0$$

A) $\left\{ \frac { 1 } { 2 } \pm \frac { \sqrt { 15 } } { 2 } \mathrm { i } \right\}$
B) $\left\{ \frac { - 1 \pm \sqrt { 15 } } { 2 } \right\}$
C) $\left\{ \frac { 1 \pm \sqrt { 15 } } { 2 } \right\}$
D) $\left\{ - \frac { 1 } { 2 } \pm \frac { \sqrt { 15 } } { 2 } \mathrm { i } \right\}$

Correct Answer:

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