$\frac{d}{dx}e^{-0.2x-5}$
$\left(-1153\right)+\left(-13003\right)$
$1+14x^2\:y+49x^4+-1$
$x^3+y^3=8$
$x2+2-1\cdot2x-3$
$5a=125$
$3\:\sin u\:-\:\cos^2\:u\:-\:3\:=0$
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