Final answer:
To simplify (r^(-7))^(-8), apply the power of a power rule by multiplying the exponents together to get r^56.
Step-by-step explanation:
To simplify (r^(-7))^(-8), we need to apply the power of a power rule. The power of a power rule states that when you have an exponent raised to another exponent, you can multiply the exponents together. In this case, we have -7 raised to the -8 power, so we multiply -7 by -8 to get 56. Therefore, the simplified expression is r^56.
Learn more about Simplifying Exponents