$\frac{d}{dx}-3xy=15x^2$
$\left(\frac{2}{3}h^2-\frac{3}{2}a\right)^2$
$x^3-4x^2-5x.\:$
$\left(6m+2n^2\right)^2$
$36-\left(-64\right)$
$\frac{1}{2cot\left(x\right)^{\left[2\right]}}$
$3x^2+8x-3=0$
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