$\int\frac{11}{-9x}dx$
$0.756+26+1.750+0.0012+3$
$x^2-y^2-x=1$
$\frac{9-n^4}{3+n^2}$
$\lim_{x\to0}\left(\frac{4}{x^2}\right)$
$\frac{d}{dx}\sqrt{x}y\:=\:x+y$
$x+1>3x+5$
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