Question

gente ajudem please: Equação exponencial:
4^x-1=1/2

Answer 1

$4^{x-1}=\frac{1}{2}\\ \\ (2^2)^{x-1}=2^{-1}\\ \\ 2^{2x-2}=2^{-1}\\ \\ 2x-2=-1\\ \\ 2x=1\\ \\ \boxed{x=\frac{1}{2}}$