Question

simplify and write the answer in exponential form​

Answer 1

Answer:

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Answer 2

Answer:

$using \: {a}^{m} \times {a}^{n} = {a}^{(m + n)} \\ { (\frac{5}{8}) }^{ - 7} \times { (\frac{5}{8 }) }^{5} = { \frac{5}{8} }^{( - 7 + 5) } = { (\frac{5}{8}) }^{ - 2}$