Use the Square Root Property to Solve the Equation $(x+9)^{2}-6=0$ A) $\{-9+\mathrm{i} \sqrt{6},-9-\mathrm{i} \sqrt{6}\}$

Multiple Choice

Use the square root property to solve the equation.
- $(x+9) ^{2}-6=0$

A) $\{-9+\mathrm{i} \sqrt{6},-9-\mathrm{i} \sqrt{6}\}$
B) $\{-3,15\}$
C) $\{-3+\sqrt{6},-3-\sqrt{6}\}$
D) $\{-9+\sqrt{6},-9-\sqrt{6}\}$