Answer:

Explanation:
Given:
The polynomial is
.
We use the FOIL method:
So, we first multiply first terms of each binomial.
⇒

Next, we multiply the outer terms.
⇒

Next, we multiply the inner terms.
⇒

Lastly, we multiply the last terms.
⇒

Now, we add all the products to get the answer.
Therefore,
