$\frac{x^3-x+4}{x+2}$

$1,671\cdot\left(\left(cos\left(13\right)\right)+\frac{sen\left(13\right)}{tan\left(43\right)}\right)$

$\left(-2\right)\left(10\right)-16$

$\frac{a^{\left(4n+13\right)}a}{a^{\left(4n-8\right)}}$

$\int\frac{\left(4sin\left(x\right)\right)}{3+cos\left(x\right)}dx$

$y^2-7y-18$

$\int\left(\frac{1}{\sqrt{-x^2-6x}}\right)dx$