Question

Como resolve isso?
4^x=1/2

Answer 1

4^x=1/2
(2^2)^x = 2^-1
2^2x = 2^-1
cortando as bases: 
2x = -1
x= -1/2

Answer 2

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