$12x^2-192=0$
$4\sqrt{6x^4y^2}$
$li\lim_{x\to1}\frac{\sqrt{x}-1}{\sqrt{x+3}-2}$
$x\:+\:3\:\le\:-5$
$x-9<-5$
$\sin x\left(\csc x-\sec x\right)=1-\tan$
$\sqrt[4]{v}=3$
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