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30 points !!!!!!!!!!!! HELPPPP!!!!!!!!! SIMPLIFY THE EXPRESSION!!!!!!!!!!! (9ab^-5)^-2
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20 votes
20 votes
30 points !!!!!!!!!!!! HELPPPP!!!!!!!!! SIMPLIFY THE EXPRESSION!!!!!!!!!!!

(9ab^-5)^-2

User Alkar
by
3.1k points

1 Answer

19 votes
19 votes

Answer:


\frac{ {b}^(10) }{ 81 {a}^(2) }

Explanation:


(9ab^(-5))^(-2) \\ \\ = {9}^( - 2) {a}^( - 2) {b}^( - 5( - 2)) \\ \\ = {9}^( - 2) {a}^( - 2) {b}^(10) \\ \\ = \frac{ {b}^(10) }{ {9}^(2) {a}^(2) } \\ \\ \huge = \frac{ {b}^(10) }{ 81 {a}^(2) }

User Saeed Fekri
by
3.3k points
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