$\frac{d}{dx}\left(4xy^2-7xy=-2\right)$
$\left(-81\right)\::\:\left(-9\right)\:\:$
$\lim_{x\to1}\frac{\ln\left|2x-1\right|}{x-1}$
$\int\sin^2\left(2x\right)\cos^32\left(x\right)dx$
$75x^2+5x-2$
$\frac{1}{\left(x^4+5x^2+3x+6\right)^2}$
$5+6x-3x+9x$
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