Question

Preciso muito da resposta..
limite de x²-9/2x²+7x+3 quando x tende a -3
Gostaria de saber qual as raizes desse denominador, 2x²+7x+3

Answer 1

$\lim_{x \to \ -3} x^2 - 9/2x^2+7x+3 \\ \lim_{x \to \ -3} (x+3)(x-3)/(x+3)(2x+1)$

$\lim_{x \to \ -3} x^2 - 9/2x^2+7x+3 \\ \lim_{x \to \ -3} (x+3)(x-3)/(x+3)(2x+1)\\ \lim_{x \to \ -3} x-3/2x+1 \\ -6/-5 = 6/5$