x^4/x^16

Question

i don't know

12^10/12^2
12^8

5n^14/20n^7
i don't know

6^8/6^8
1

a^9b^5/a^3b^15
i don't know

/=divided by

Answer 1

x^4/x^16 = x^4/(x^4*x^12) = 1/x^12 = x^-12

5n^14/20n^7 = (5n^7*n^7)/(5*4*n^7) = n^7/4

a^9b^5/a^3b^15 = a^3a^6b^5/a^3b^5b^10 = a^6/b^10

not sure how you got some and had no idea on others which were very similar.

Answer 2

thanks!!