Question 103585
{{{(x + 4)^2 = 16}}}
{{{sqrt((x + 4)^2) = sqrt(16)}}}Take the square root of both sides. 
{{{x+4=4}}} and {{{x+4=-4}}} since both {{{4*4=(-4)*(-4)=16}}}
Solve the two equations for x.
{{{x+4=4}}}
{{{x+4-4=4-4}}}
{{{highlight(x=0)}}}
{{{x+4=-4}}}
{{{x+4-4=-4-4}}}
{{{highlight(x=-8)}}}
Your two solutions are x=0 and x=-8.