$\int\frac{2^{-3}}{3}dz$

$cos\left(\pi x\right)-\sqrt{3}sin\left(\pi\:x\right)=1$

$0.3a\:+0.4b\:+0.5c\:-0.6a\:-0.7b\:-0.9c\:+3a\:-3b\:-3$

$x+2x-x+3-3x$

$\left(5m+8n\right)\left(5m-8n\right)$

$\cos\left(x\right)^2\left(1+\tan\left(90-x\right)^2\right)$

$5\left(x-6\right)\left(x-2\right)^2+9$