2-(х-1)*(х+1)=??? Помогите!!!)

Question

2-(х-1)*(х+1)=???
Помогите!!!)

Comments

2-(x^2-1) = 1-x^2= (1-x)(1+x)

Answer 1

2-(x²-1)
2-x²+1
3-x²
(всё)