$\left(1-b-d\right)^2$

$\frac{d^3y}{dx^3}=-\cos\left(x\right)$

$\frac{\sin x\left(\sec^2x-\tan^2x\right)}{cscx}$

$\left(2xy\right)dx+\left(x^2y^2\right)dy=0$

$\left(sinx\right)\left(cosx\right)\left(cotx\right)-sin^2x=1$

$a^2-9a+5$

$\int_0^{\infty}\left(x\cdot\frac{1}{4}\cdot e^{-\frac{x}{4}}\right)dx$