Question

Simplify and write the answer in exponential form
${(-4)}^{-3}\times {\left(5\right)}^3\times {(-5)}^{-3}$

Answer 1

$(-4{)}^{=3}\times (5{)}^3\times (-5{)}^{-3}=\frac{-1}{4^3}\times 5^3\times \left(\frac{-1}{5^3}\right)=\frac{1}{4^3}=4$