Answer:

First, let's rewrite the expression as

(

x

+

3

)

(

x

+

3

)

Rewriting it in this form is what allows us to do FOIL, which stands for Firsts, Outsides, Insides, Lasts. This is the order we'll multiply in:

Multiply the first terms:

x

⋅

x

=

x

2

Multiply the outside terms:

x

⋅

3

=

3

x

Multiply the inside terms:

3

⋅

x

=

3

x

Multiply the last terms:

3

⋅

3

=

9

Now, we have the following:

x

2

+

3

x

+

3

x

+

9

Which can obviously be simplified to

x

2

+

6

x

+

9

Hope this helps!