$2\:cos\:x-1=0.4632$

$18x^4-14x+32x^3+8x^2-64-32x^3$

$\frac{d^2}{dx^2}\left(\frac{4x^3}{3}-7x\right)$

$\lim_{x\to0}\left(\frac{\cos\left(3x-cos5x\right)}{x^2}\right)$

$y\ln\left(t\right)\left(\frac{dy}{dt}\right)=\left(\frac{y+1}{t}\right)^2$

$-7m\:+\:9n\:+\:13p\:-5m\:+\:14n\:-\:18p$