$2sin^2\theta\:+sin\theta\:-1$

$\lim_{x\to5}\left(\frac{x^3-125}{x^2-5x+0}\right)$

$3ax-2by-2bx-6a+3ay+4by$

$\frac{dy}{dx}=x\sin\left(x\right)+\cos\left(x\right)$

$\frac{dy}{dx}=\frac{1}{y}-\frac{y}{5}$

$\frac{d^2}{dx^2}\left(e^{e^x-1}\right)$

$\left(25x^2+30x\right)$