Question

9^ 2x-1 =1 ??
Equação exponencial.

Answer 1

81x-1=1
81x=1+1
81x=2
x=81/2
x=40,5

Answer 2

9^ 2x-1=1

9^ 2x-1 = 9^0

2x-1 = 0

2x = 1

x= 1/2