## Algebra 2 (1st Edition)

$$x=3\sqrt{2}-2,\:x=-3\sqrt{2}-2$$
Completing the square, we find: $$x^2+4x-14+2^2-2^2 \\ \left(x+2\right)^2-14-2^2 \\ \left(x+2\right)^2-18 \\ x=3\sqrt{2}-2,\:x=-3\sqrt{2}-2$$