kk 2 tolong bantuin no 8,9,10

8. 5^-2/25^2=5^-2/5^2(2)=5^-2/5^4
=5^-2-4=5^-6=1/5^6=1/15625
9. (ab^-5)^-4=a^-4b^20
10.(x^5y^4/x^3y^-2)^-2= x^10y^-8/x^-6y^4=x^10+6 y^-8-4=x^16 y^-12 semoga membantu ya:)