### SAT MATH HELP 1) 25^x= 81 then what is 5^x-1 =? 2. f (a*x^2m)^n / a*x^2n)^m?

SAT MATH HELP 1) 25^x= 81 then wat is 5^x-1 =? 2. f (a*x^2m)^n / a*x^2n)^m?

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