Question

Equação exponencial

 

5x²-¹ = 1/5

Answer 1

$5^{x^2-1}=\frac{1}{5} \\ \\ 5^{x^2-1}=5^{-1} \\ \\ x^2-1=-1 \\ \\ x^2=0 \\ \\ \boxed{x=0}$

Answer 2

$5^{x^2-1}= \frac{1}{5} \\ \\ 5^{x^2-1}= 5^{-1} \\ x^2-1=-1 \\x^2= -1 +1\\ x^2=0\\ \boxed{\boxed{x=0}}$