Let's try to simplify that a bit. Rewriting it in its current form it looks like this:
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We could split it up and deal with one problem at a time if we do this:
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The rule with like bases and division of the exponents is that we subtract the lower exponent from the upper so that would be
which gives us new exponents of
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We rewrite to make that negative exponent a positive by putting it under a 1, so the whole problem with no negatives looks like this now:
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If x = 2 and y = 3, we sub in accordingly:
which simplifies to
, the first choice above.