$\int\frac{x^2+3}{\left(x+2\right)\left(x-1\right)}dx$

$\frac{8x^2+2x^3+3}{x^2+2x-1}$

$2bc+a^{2}b^{2}-a^{2}bc^{4}$

$\int\frac{x+2}{x^2-x-2}dx$

$sin^{-1}\left(sin\left(\frac{\left(7\cdot3.14\right)}{16}\right)\right)$

$6\frac{dy}{dx}+12y=4$