Question

Can somebody help me with this question?

Answer 1

9514 1404 393

Answer:

(d) b/a

Explanation:

The applicable rule of exponents is ...

(a^b)/(a^c) = a^(b-c)

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Then the expression simplifies to ...

b^-2/(ab^-3) = b^(-2-(-3))/a = b^1/a = b/a