Question

lim x= 1

2x^2+5/x^3+a

Answer 1

$\lim _{x\to \:1}\left(\frac{2x^2+5}{x^3+a}\right)$
Sustituimos en la variable:
$=\frac{2\cdot \:1^2+5}{1^3+a}$
Simplificamos:
$=\frac{7}{a+1}$