$x-y+3y-2y-4x$
$\left(3x^2-6x\right)\cdot\left(\sin\left(x\right)+\cos\left(x\right)\right)$
$-\left(-100\right)-\left(+114\right)$
$\lim_{x\to0}\left(\cos\left(e^{-x}\right)-1\right)$
$\left(2x+w^2\right)^3t$
$-cost\:i-sent\:j$
$\left(8u+2v^2\right)\left(8u-2v^2\right)$
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