6. Give a mathematical example to show the following: For any rational number m/n and any positive real number a, a^-m/n means 1/a^m/n 7. Give a numerical example to represent this rule. For any nonnegative number a, any integer k and m then: ^k sqrt a^m = (^k sqrt a)^m

8. Write with rational exponents. Be sure to show your work and simplify your answer. (^6 sqrt 12ab)^3

9. Write without using rational exponents. (m^3 n^5)^1/4

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