Find All Values of X Satisfying the Given Conditions $y = x ^ { 2 } + 4 x$

Multiple Choice

Find all values of x satisfying the given conditions.
- $y = x ^ { 2 } + 4 x$ and $y = 40$

A) $- 2 \pm 2 \sqrt { 11 }$
B) $- 2 \pm 2 \sqrt { 22 }$
C) $\pm 2 \sqrt { 11 }$
D) $2 \sqrt { 11 } \pm 2$