$\frac{x+2}{x^2+x+1}-\frac{1-x^2}{x^3-1}$
$-x^4+10x^3-28x^2+24x-32$
$\:7x-18>3$
$\int t^2\cdot\cos\left(n\:wo\:t\right)dt$
$y^2+13y+30$
$784-\left\{5+\left[3-132:\left(-2\right)\right].7\right\}$
$\log\left(4x\right)+2\log\left(3\right)+\log\left(x+2\right)$
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