2: \(=\left(\dfrac{2}{3}\cdot\dfrac{3}{2}\right)^3\cdot\left(\dfrac{3}{2}\right)^2=\dfrac{9}{4}\)
6: \(=\left(\dfrac{1}{3}\cdot\dfrac{-9}{2}\right)^4\cdot\left(-\dfrac{9}{2}\right)^2=\left(-\dfrac{3}{2}\right)^4\cdot\left(-\dfrac{9}{2}\right)^2\)
\(=\dfrac{3^4\cdot9^2}{2^4\cdot2^2}=\dfrac{3^8}{2^6}\)
