Question 234912
{{{(x+2)^2 -3}}}

You would square every term in parenthesis:

{{{(x^2+2^2) -3}}}

{{{x^2+4-3}}}

{{{x^2+1}}}

Now, if you have to simplify further you can foil backwards:

{{{(x+1)(x-1)}}}

If you want to check and multiply out by foil method, it checks to be:

{{{(x^2+1)}}}