36) \(\frac{1}{27}k^6=\)

\(\frac{1}{27}=\left(\frac{1}{3}\right)^3\), а \(k^6=(k^2)^3\).

\(\frac{1}{27}k^6=\left(\frac{k^2}{3}\right)^3\).

Ответ: \(\left(\frac{k^2}{3}\right)^3\).