Question

1/2lg81-lgx>lg2 cpo4Ho TTo)l(aJlyNcTa

Answer 1

1/2*lg81 - lg x > lg2
lg√81 - lgx > lg2
lg9 - lgx > lg2
lgx < lg9 - lg2
lgx < lg(9:2)
lgx < lg4,5
x < 4,5
x∈(-∞; 4,5)