Question

Imi trebuie forma descompusa.

Answer 1

Salut,

x² + x -- 2 = x² -- 1 + x -- 1 = (x -- 1)(x + 1) + x -- 1 =

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

A fost greu ?

Green eyes.

Answer 2

x² + x -- 2 = (x -- 1)(x + 2)

x² + x -- 2 =

x² -- 1 + x -- 1 =

(x -- 1)(x + 1) + x -- 1 =

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