$\int\frac{2x}{-x^2-1}dx$

$\frac{dy}{dt}-y=t^2-t^3$

$5\cdot6\cdot\left(-1\right)$

$\frac{d}{dx}4x+7y=4$

$\left(x-3\right)^3\left(x-2\right)^2$

$\frac{1}{1-\cos\left(x\right)}-\frac{1}{1+\cos\left(x\right)}=-\frac{2\cos\left(x\right)}{\sin^2\left(x\right)}$

$\left(-416\right)+\left(-235\right)+\left(-315\right)$