$\lim_{x\to0}\left(\frac{8x^2+3x}{7x^3+5x+6}\right)$

$\int4\left(\sec\left(x\right)^2\right)dx$

$\lim_{x\to0}\left(\frac{\left(4x-2\right)\left(x-3\right)}{\left(x^2-4x\right)\left(x-2\right)}\right)$

$30\cdot3$

$1t\:+\:1s\:+\:1g$

$f\left(x\right)=\left(x^3-1\right)^{-3}sin\left(x^3\right)+\ln\left(tan\left(x\right)\right)$

$\left(2n+2\right)^3$