Question

$( - 16) ^{ - 3} \times ( \frac{1}{20} ) ^{ - 3}$
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Answer 1

Answer:

${( - 16)}^{ - 3} \times {( \frac{1}{20} )}^{ - 3} \\ = { (\frac{ - 1}{16}) }^{3} \times ({20})^{3} \\ = \frac{ { (- 20)}^{3} }{ {16}^{3} } \\ = {( \frac{ - 20}{16}) }^{3} \\ = {( \frac{ - 5}{4}) }^{3} \\ = \frac{ - 125}{64}$