$-14\cdot\left(14-4\right)$

$3^{2+1}$

$\frac{dy}{dx}=-\frac{y}{x\left(-1+ln\left(\frac{x}{y}\right)\right)}$

$743+-256+-91+303$

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

$\left(\frac{\sin^2\left(x\right)}{\cos^2\left(x\right)}\right)^{\cos\left(x\right)}\cdot\csc^2\left(x\right)$

$\frac{dy}{dx}2cos\left(5x\right)$