Question

Calcule o limite

$\lim_{x \to \ 1} \frac{x^3 -1}{x^2 - 3x + 2}$

Answer 1

lim     (x-1)(x²+x +1) 
x⇒1   (x-1)(x-2)

lim      x²+x+1
x⇒1     x-2

1²+1+1
  1-2

3/-1

-3