$\frac{d}{dx}\left(\left(3x-2x^2\right)^7\right)$
$3.\:-\:16\:+\:\left(\:-\:18\:\right)$
$2x^2+5x=4$
$xydy-\left(x^2+y^2\right)dx=0$
$\int_1^n\left(xlnx\right)dx$
$\frac{2}{\cot\left(x\right)}+\frac{3}{\csc\left(x\right)}=0$
$m^2\:\cdot m^2$
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