Answer
$\dfrac{-3k^{2}v^{2}}{2}$
Work Step by Step
$\bf{\text{Solution Outline:}}$
To simplify the given expression, $
\left( \dfrac{-27k^8v^7}{8k^2v} \right)^{\frac{1}{3}}
,$ use the laws of exponents.
$\bf{\text{Solution Details:}}$
Using the Quotient Rule of the laws of exponents which states that $\dfrac{x^m}{x^n}=x^{m-n},$ the expression above simplifies to
\begin{array}{l}\require{cancel}
\left( \dfrac{-27k^8v^7}{8k^2v} \right)^{\frac{1}{3}}
\\\\
\left( \dfrac{-27k^{8-2}v^{7-1}}{8} \right)^{\frac{1}{3}}
\\\\
\left( \dfrac{-27k^{6}v^{6}}{8} \right)^{\frac{1}{3}}
\\\\
\left( \dfrac{(-3)^3k^{6}v^{6}}{2^3} \right)^{\frac{1}{3}}
.\end{array}
Using the Power of a Quotient Rule of the laws of exponents which is given by $\left( \dfrac{x^m}{y^n} \right)^p=\dfrac{x^{mp}}{y^{np}},$ the expression above is equivalent to
\begin{array}{l}\require{cancel}
\left( \dfrac{(-3)^3k^{6}v^{6}}{2^3} \right)^{\frac{1}{3}}
\\\\=
\dfrac{(-3)^{3\cdot\frac{1}{3}}k^{6\cdot\frac{1}{3}}v^{6\cdot\frac{1}{3}}}{2^{3\cdot\frac{1}{3}}}
\\\\=
\dfrac{(-3)^{1}k^{2}v^{2}}{2^{1}}
\\\\=
\dfrac{-3k^{2}v^{2}}{2}
.\end{array}
