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

$-4157\:+360$

$\frac{dy}{dx}=\frac{\left(x^2+4-x\right)^{\frac{1}{2}}-x}{2}$

$\left(-x^2+y^2\right)dx+xydy=0$

$-\left(-213\right)-\left(675\right)+\left(-536\right)-\left(894\right)+\left(29\right)$

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

$a^2+3a$