Помогите пжn^7×n^-3/n^6, n=4

Question

Помогите пж
n^7×n^-3/n^6, n=4

Answer 1

N^7×n^-3/n^6=n^7×n^-9=n^-2=1/n^2=1/4^2=1/16

Answer 2

N^4/n^6=n^-2
При n=4 n^-2=1/16