4х - 6· 2х-1 ≤ 4 July 8, 2019 16 32 64 128 6 2 х 1 4 6 2х 7 )+ 4 1 4х 2х 6 1 4 3 4х 7 1 2 4х+2 6 4-2х -6 4х-6 2
