(a的8/5次方×b的-6/5次方)的-1/2次方×5次方根号(a的4次方)÷5次方根号(b的3次方)
=a的-4/5次方×b的3/5次方×a的4/5次方÷b的3/5次方
=(a的-4/5次方×a的4/5次方)×(b的3/5次方÷b的3/5次方)
=1
(a的8/5次方×b的-6/5次方)的-1/2次方×5次方根号(a的4次方)÷5次方根号(b的3次方)
=a的-4/5次方×b的3/5次方×a的4/5次方÷b的3/5次方
=(a的-4/5次方×a的4/5次方)×(b的3/5次方÷b的3/5次方)
=1