Question

alguem ajuda em limites pf

f(x) = 2x²+9x+9/x+3 se x for diferente de -3
3 se x for = -3

calcular o lim x-> -3 f(x)

Answer 1

$lim_{x \rightarrow -3} \frac{2x^2+9x+9}{x+3}\\\\lim_{x \rightarrow -3} \frac{(x+3)(2x+3)}{x+3}\\\\lim_{x \rightarrow -3} \;2x+3\\\\=2*(-3)+3\\\\=-3$