1) = (2x-5 - x)*(2x-5 + x)=(x-5)*(3x-5)
1) (2x-5)^2-x^2=(2х-5-х)(2х-5+х)=(х-5)(3х-5)
2) (5x-2)^2-(x-1)^2=(5х-2-х+1)(5х-2+х-1)=(4х-1)(6х-3)
3)(3x+2)^2-x^2=(3х+2-х)(3х+2+х)=(2х+2)(4х+2)
1) = (2x-5 - x)*(2x-5 + x)=(x-5)*(3x-5)
1) (2x-5)^2-x^2=(2х-5-х)(2х-5+х)=(х-5)(3х-5)
2) (5x-2)^2-(x-1)^2=(5х-2-х+1)(5х-2+х-1)=(4х-1)(6х-3)
3)(3x+2)^2-x^2=(3х+2-х)(3х+2+х)=(2х+2)(4х+2)