$\frac{d}{dx}\cos2m^4\cdot\tan2m^4$
$\left(x+a^2\right)^2$
$s^{-6}t^{-1}u^3.s^{-6}t^6u.s^{-4}t^9u^{-5}$
$\int_2^{\infty}38e^{1.9x}dx$
$\frac{z^2z^4}{z^3z^{-1}}$
$\left(\left(-2+\frac{2i}{n}\right)+2\right)$
$\frac{4x}{2}+3^2$
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