**Problem 3 -- Solution**

We factor 4
*x*
from both terms in the numerator, and
*x *
from both terms of the denominator and obtain

.

Now we have to remember the formula for the difference of squares

.

The formula gives us that

.

Hence, our quotient becomes

.

The common factors (
*x*
-1) and
*x *
cancel and the final answer is

.