To multiply two fractions, you simply multiply the numerators, and multiply the denominators.
For example:
It works the same way when there are variables:
You have to be careful when multiplying fractions that have polynomials for the numerator and denominator:
We can now further simplify this problem using FOIL.
As for the problem in the practice test the trick is to factor each of the fractions first:
Now canceling the like factors we get:
And we are done.