Question 1062214

Could you please help me. What is the solution of the equation 2(x+2)^2-4=28 when solved for x. 
<pre>{{{2(x + 2)^2 - 4 = 28}}}
{{{2(x + 2)^2 = 28 + 4}}}
{{{2(x + 2)^2 = 32}}}
{{{(x + 2)^2 = 16}}} ----- Dividing by 2
{{{sqrt((x + 2)^2) = " "+- sqrt(16)}}} ------ Taking the square root of each side
{{{x + 2 = " "+- 4}}}
{{{x = " "+- 4 - 2}}}
{{{highlight_green(matrix(1,5, x, "=", 4 - 2, "=", 2))}}}     OR    {{{highlight_green(matrix(1,5, x, "=", - 4 - 2, "=", - 6))}}}