$3x+5-8x+5$
$+3\left(x^4+y^2\right)$
$1-2w^3+w^6$
$\left(\cos\left(x\right)\cos\left(y\right)-\cot\left(x\right)\right)dx-\left(\sin\left(x\right)\sin\left(y\right)\right)dy=0$
$\frac{dy}{dx}-xy\:=\:9x$
$sec-tan$
$4x^2+12x+9>0$
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