$\frac{-x^2-4x+8}{x-1}$

$2y\cdot\frac{dy}{dx}=\frac{4cos2x}{e^{y^2}}$

$\int\frac{1}{\sqrt{7t-4}}dt$

$\left(csc\theta\:-cot\theta\:\right)$

$-92+-36+31+-15+18$

$\left(-\frac{2}{5}x^2+\frac{1}{2}x-5\right)-\left(-\frac{6}{7}x+\frac{4}{3}\right)-\left(-2x^2-\frac{2}{3}\right)$

$\left(6xb^4+3b\right)^3$