$3\sqrt{x^4}$
$e^xy\frac{dy}{dx}=-e^{-y}+e^{-2x-y}$
$-4\:=\:g-3$
$8x-\left(5x-7\right)+2x-3=34$
$\left(2a+u+4n\right)^2$
$\arccos\left(0.31426968052735443\right)$
$-\:\left(a\:+\:b\right)\:+\:3\left(2a\:+\:5b\right)$
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