berapa hasil dari x-2 per x+1 = x-2 per x+1 ?

[tex] \frac{x-2}{x+1} [/tex] =[tex] \frac{x-2}{x+1} [/tex]
(x-2)(x+1) = (x-2)(x+1)
x²-x-2 = x²-x-2
-2 = -2