$\left(\frac{1}{5}t+\frac{2}{7}\right)\left(\frac{1}{5}t-\frac{2}{7}\right)$

$6-12-18+12+16+14-12-14-18$

$1=\frac{1}{\csc\left(x\right)^2}+\cos\left(x\right)^2$

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

$\left(\frac{2a^4}{3c^5}\right)^2$

$\lim_{x\to-4}\left(\frac{2x+4}{4}\right)$

$16m^2-100$