$\frac{d^2}{dx^2}\left(f\left(x\right)\right)=4x^2-6x+2$
$4m+5m+7m-m$
$\frac{2}{2^2-2x+5}$
$\tan x^2-\cot x^2$
$72x^2-24xy+2y^2$
$\lim_{n\to\infty}\:2^{n+1}$
$\int arcsen\left(z\right)\:dz$
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