Respuesta :

wegnerkolmp2741o

( a^6 b^ -3) ^ (1/3)

split them apart

( a^6) ^ (1/3) (b^ -3) ^ (1/3)

power to a power is multiply

a^ (6*1/3)  b^(-3*1/3)

a^2 b^-1

a^2/b

Choice D