$\lim_{x\to\infty}\left(\frac{x+1}{\left(x^2+1\right)^{\frac{1}{3}}}\right)$

$\lim\:\:_{x\to\:\:2}\left(\frac{x^3-8}{x^2-11x-26}\right)$

$4\left(5^3\right)+2\left(-3^2\right)-5\left(-1^4\right)-3$

$4m^2+\frac{1}{9}n^2$

$\lim_{x\to\infty}\left(\frac{x^2-1}{x+2}\right)$

$\int_0^2arcoseno\left(x\right)\:dx$

$2-k-k^2$