\( \sqrt{(x+3)^{2}}=\sqrt{4} \)
\( x = -3 \pm 2 \)
Step 1 :\( (x+3)^{2} = 4 \)
Step 2 :\( x+3 = \pm\sqrt{4} \)
Step 3 :\( x = -3 \pm 2 \)