Back in "the good old days", when one multiplied fractions it was advantageous to cancel common factors before you multiplied. For example:
This was much easier than multiplying first and then trying to reduce the fraction.
The same is true for multiplying fractions like the ones in this problem. See if you can find common factors to cancel before actually multiplying. The main difference between your problem and the example I've given above is that the factoring is a little harder.
So we start by trying to factor each numerator and denominator. We find that only the second numerator will factor giving us:
And we find that the (x-3)'s will cancel!
and this is fairly simple to multiply out:
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