Question

Ajutor! Vă rog frumos.

Answer 1

$\lim_{x \to \ 1 } \frac{x^{2} -5x+4}{x-1}$

$\lim_{x \to \ 1 } \frac{x^{2}-x-4x+4 }{x-1}$

$\lim_{x \to \ 1 } \frac{x(x-1)-4(x-1)}{x-1}$

$\lim_{x \to \ 1 } \frac{(x-1)(x-4)}{x-1}$

$\lim_{x \to \ 1 } (x-4)$

$1-4=-3$