Final answer:
To simplify the expression 9^8/9^4, we use the property of exponents that states a^m/a^n = a^(m-n). So the answer is 9^4.
Step-by-step explanation:
To simplify the expression 9^8/9^4, we can use the property of exponents that states a^m/a^n = a^(m-n). In this case, we have 9^8/9^4 = 9^(8-4) = 9^4. So the final simplified expression is 9^4.