
ОДЗ :
0\\4^{x}>2\\2^{2x}>2\\2x>1\\x>\frac{1}{2}" alt="4^{x}-2>0\\4^{x}>2\\2^{2x}>2\\2x>1\\x>\frac{1}{2}" align="absmiddle" class="latex-formula">

Разделим на 

Сделаем замену :
, m > 0
m² - 2m - 3 ≤ 0
(m - 3)(m + 1) ≤ 0
+ - +
_______[-1]___(0)___________[3]_________
0 < m ≤ 3

С учётом ОДЗ ответ :
x ∈ ![(\frac{1}{2};log _{2} \sqrt{3}] (\frac{1}{2};log _{2} \sqrt{3}]](https://tex.z-dn.net/?f=%28%5Cfrac%7B1%7D%7B2%7D%3Blog%20_%7B2%7D%20%5Csqrt%7B3%7D%5D)