Question

$Log \frac{1}{4}$
            2

Answer 1

$Log_{2} \frac{1}{4}$

$2 ^x = \frac{1}{4}$

$2^{x}=2^{-2}$
$x= -2$

Answer 2

      log 1/4  = x
           2
 2^x = 1/4 ==>  2^x = 2^-2 ==>  x = - 2