((3/2)^x)^(-2)·9/√2 = 4/√3
(3/2)^(- 2·x)·9/√2 = 4/√3
(3/2)^(- 2·x) = 4/√3·(√2/9)
(3/2)^(- 2·x) = 2^(5/2)/3^(5/2)
(2/3)^(2·x) = (2/3)^(5/2)
2·x = 5/2---> x = 5/4
(3/2)^(-2x) = 4/9* rad(2)/rad(3)
(2/3)^(2x) = (2/3)^(2+1/2)
Uguagliando gli esponenti
2x = 5/2
x = 5/4