a: \(=2\cdot2^4\cdot2^3=2^8\)
b: \(=5^3\cdot5^3=5^6\)
c: \(=\dfrac{2}{3}\cdot\left(\dfrac{2}{3}\right)^2\cdot\left(\dfrac{2}{3}\right)^3=\left(\dfrac{2}{3}\right)^6\)
d: \(=\left(\dfrac{5}{6}\right)^3:\left(\dfrac{5}{6}\right)^2\cdot\dfrac{5}{6}=\left(\dfrac{5}{6}\right)^2\)
b: \(=\left(\dfrac{2}{3}\right)^6:\left(\dfrac{2}{3}\right)^8\cdot\left(\dfrac{2}{3}\right)^3=\left(\dfrac{2}{3}\right)^1\)