Algebra (easy)

So easy@!@

I think a²+4a+4.

\((a+2)(a+2)\\ = a(a+2) + 2(a+2)\\ = (a)(a) + (2)(a) + (2)(a) + (2)(2)\\ = a^2 + 2a + 2a + 4\\ = a^2 +4a + 4\)

Btw the way you type is super cool. The Guest who asked the question.