$\frac{6\left(-4\right)}{8}$

$\frac{\left(15x^3+14x^2-23x+8\right)}{\left(5x-2\right)}$

$\ln\left(x+4\right)-\ln\left(x\right)=3$

$\lim_{x\to0}\left(\frac{t}{\sqrt{t+1\:-\sqrt{1+t}}}\right)$

$8\:x\:0.135\left\{\right\}$

$\left(6m-5y\right)^2$

$\sqrt{x}\left(\sqrt{x}+2\sqrt{xy}+4\sqrt{xyz}\right)$