$\frac{x^3+x-3}{x+1}$
$-\cos\left(\pi+x\right)$
$5x+29=9x-15$
$\frac{-15a^4b^7}{45a^2b^2}$
$\log_{0.2}\left(25\right)$
$\left(a+b-2\right)^2$
$\left(\frac{-32}{4}\right)^{2}$
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