(1/3)(в степени х²) >(1/9)(в степени 8)
(1/3)^x² >(1/9)^8
(1/3)^x² >(1/3)^(8*2)
(1/3)^x² >(1/3)^16
x² < 16
|x| < 4
-4 < x < 4