$9\csc x-4=11\:csc\:x$
$\left(d-2\right)^3\left(d+1\right)^2$
$\frac{d}{dx}3x^2+2xy^2=y$
$\int e^{-4x}\cos\left(4x\right)dx$
$\left(\sin^2\left(x\right)-\cos^2\left(x\right)\right)\left(\csc^2\left(x\right)\right)+\cot^2\left(x\right)$
$\frac{2x}{x^2+x}$
$x^2+3x^2+2x$
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