Question 824787
( 2^(3x))*(2^x) = 1/4
2^(3x+2^x) = 1/4
2^(4x) = 1/4
(2^4)^x = 1/4
16^x = 1/4
16^x = 1/4
{{{16^x = 1/(16^(1/2))}}}
{{{16^x = (16^(-1/2))}}}

so x = -1/2