Explanation:
The expression that we have is:

And we need to use the quotient rule to find the exponent of x.
Step 1. The quotient rule or division rule for exponents is:

Where A is the case and m and n are the exponents. We need to apply this rule both to x and y in our expression.
Step 2. Applying the quotient rule the result is:

Step 3. Solving the subtractions in the exponents:

The exponent on x is 2.
Answer:
2