$-3^2-3$
$u^2^2\:x^3$
$\sin\left(x\right)-\cos\left(x\right)+1=\sin\left(x\right)+1$
$3\left(5a-3\right)+6a$
$2x^2+12x+x$
$x^2+20x=8$
$\left(8x^3y^{-2}\left(z^2\right)^3\right)^4$
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