Final answer:
To rewrite the expression 5^(-6) / 5^(-4), subtract the exponents and simplify.
Step-by-step explanation:
To rewrite the expression 5^(-6) / 5^(-4), we can subtract the exponents since the base is the same. So, 5^(-6) / 5^(-4) = 5^((-6) - (-4)).
Next, we simplify the expression inside the exponent: (-6) - (-4) = -2.
Therefore, the correct result is 5^(-2).