sama no 6 sekaliaan priksa juga ya kak

5. 12a^3 b^4

6. 4a^6 b^-8

7. 1

8. 80y

5) (6a^5 b^-3) (2a^-2 b^7)
= 6 . 2 . a^(5 + (-2)) . b^(-3 + 7)
= 12 a^3 b^4

6) (2a^3 b^-4)^2
= 2^2 . a^3(2) . b^(-4)(2)
= 4 a^6 b^-8

7) (p^7 : p^4) / p^3 = p^(7 - 4) / p^3 = p^3 / p^3 = 1

8) (10y)^4 : (5y)^3
= (2 . 5y)^4 : (5y)^3
= 2^4 . (5y)^4 : (5y)^3
= 16 . (5y)^(4 - 3)
= 16 . 5y
= 80y