Question

Simplify and write in exponential form with positive exponent [{(5/7)²}-¹]

Answer 1

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( 25/49 ) ^-1

= 49/25

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Answer 2

Step-by-step explanation:

apply following identities

((a^x)^y)=a^xy

and

(a^(-x)) =(1/a)^x

see attachment

AS WE HAVE TO WRITE IN EXPONENTIAL FORM NOT EXPAND IT FURTHER