Algebra 2 help, please =D

Question

anonymous · Answer

Your friend runs up to you, scared that he is not ready for the upcoming quadratics test. To help him study, you will create four different quadratic functions. Then demonstrate to him how to rewrite each function as a group of factors, if possible.

The function h(x) is a perfect square trinomial.

anonymous · Answer

There were four, I did three, and this is the only one I don't understand. Thanks

ranga · Answer

For example (x+3)^2 can be written as x^2 + 6x + 9.
Therefore,  x^2 + 6x + 9 will be a perfect square trinomial.

ranga · Answer

h(x) = x^2 + 6x + 9  is a perfect square trinomial because it can be written as (x+3)^2

anonymous · Answer

Okay, that kind of makes sense.

anonymous · Answer

Actually, nevermind. I get it. Thanks!

ranga · Answer

Alright. yw.