$\lim_{x\to0}\left(\frac{6\left(e^{2x}-1\right)}{2e^x-2}\right)$

$16abc+8ac-280ad=8a\left(2bc+c-35d\right)$

$\left(r+s-t\right)^2$

$\lim_{x\to0}\left(\cos\left(x\right)+\tan\left(x\right)\right)^x$

$\frac{dy}{dx}=3e^{\left(-2x\right)}y^2$

$\int\sqrt{x}\left(x+\sqrt{3}x\right)dx$

$-\left(-2+4+6\right)-7-\left(3-8\right)$