Question

(×+×-1).(×-1) calculo

Answer 1

(×+×-1).(×-1) = (2x - 1)*(x-1)

Pela distributiva vem que:
(2x - 1)*(x-1) 
2x² - 2x - x + 1
2x² - 3x + 1

Answer 2

(2x - 1).(x - 1) = 2x^2 - 2x - x + 1; = 2x^2 - 3x + 1