Question

Simplify: (n + 3)2

Answer 1

\((n+2)^2=(n+2)(n+2)\) is a start

Answer 2

btw this is called "multiplying" not "simplifying"
there is nothing "simpler" about
\[(n+2)(n+2)=n^2+2n+2n+4=n^2+4n+4\] than \((n+2)^2\)
if your math teacher wrote "simplify" you might want to ask him or her (gently and politely) why one form is simpler than the other

Answer 3

oh and i see it is \((n+3)^2\) but the procedure is the same
start with \((n+3)^2=(n+3)(n+3)\) and multiply out