$778\:+\:\left(-512\right)$

$w=in\left(\frac{uv}{st}\right)$

$\frac{d}{dx}\left(\arccsc\left(4x-1\right)^8\right)$

$\left(+3\right)-\:\left(+5\right)-\:\left(-9\right)+\left(-23\right)+\left(+4\right)$

$4\cos\left(x-1\right)=3$

$\left(x^2-3\right)\left(2x^2+1\right)$

$\frac{\cos\left(\frac{\pi}{4}x\right)}{3x-6}$