$\left(\frac{2x^2}{2x^2-7}\right)$
$2xy'-y=-2xy^3$
$\frac{d}{dx}\left(ln\left(9x^2+5y^2\right)\right)$
$2x\left(\frac{2}{6}\right)$
$b+2=-5$
$29-3\cdot\left(12-7\right)$
$\int\left(x^2+1\right)^95x\:dx$
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