Multiply.

To multiply the given expression, we first simplify it by factoring where possible.

The expression is:

Now, we can factor each part:

Now we can rewrite the expression with the factors:

Next, we can multiply the numerators and the denominators:

Multiplying gives us:

Now we see that both the numerator and denominator have a common factor of . Assuming and to avoid division by zero, we can cancel these common factors:

To simplify , we can divide both the numerator and denominator by 2:

Thus, the simplified result of the multiplication is: