2 x ( x − 1 ) − ( 2 x − 1 ) ( x + 2 )

Question

2 x ( x − 1 ) − ( 2 x − 1 ) ( x + 2 )

Answer 1

= 2х²-2х-(2х²+4х-х-2)
2х²-2х(2х²+3х-2)
2х²-2х-2х²-3х+2= -2х-3х+2 = -5х+2

Comments

спасибо большое