$\int\frac{8}{\left(x^3-4x\right)}dx$
$\frac{d}{dx}\left(9^{12x}+2x^9-e^{9x}\right)$
$z^2+8z+20$
$2x^2-34x+0$
$-6\:+9\:+4\:+\:-2\:-6\:-9\:-\:-3\:-5\:-6$
$^{e^{-\frac{1}{2}}}$
$5x^4\left(x^2\right)$
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