$\frac{3x^{3}+x-11}{x-1}$

$\frac{2x^3-6x^2+x-1}{2x^2+1}$

$\:m\:=\:tg2\:45^{\circ}\:.\:sen\:60^{\circ}\:.\:tg\:30^{\circ}\:.\:tg2\:60^{\circ}$

$\int4sex\left(x\right)^5tan\left(x\right)dx$

$\lim_{x\to\infty}\left(\sqrt{n^2+5n-2}-\sqrt{n^2-3n+2}\right)$

$2x+2^2$

$\sqrt{\left(-5\right)^2+\left(-3\right)^2}$