Question 893793
Notation is very important.



{{{sqrt(x^2)+4x+4=x+4x+4}}}
{{{5x+4}}}



{{{sqrt(x)^2+4x+4}}}
{{{x+4x+4}}}
{{{5x+4}}}



{{{sqrt(x^2+4x+4)}}}
{{{sqrt((x+2)(x+2))}}}
{{{-(x+2)}}}  or  {{{(x+2)}}}