Answer
$\frac{-125}{8a^9}$
Work Step by Step
Distribute the exponent to the numerator and denominator and then simplify each term to find a simplified expression.
$(\frac{-5}{2a^3})^3$=$\frac{-5^3}{2^3a^{3(3)}}$=$\frac{-125}{8a^9}$
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