Помогите!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
(2x-1)^2=9
(2x-1)^2-9=0
2х-1=3 или 2х-1=-3
2х=4 2х=-2
х₁=2 х₂=-1
