$x^2-3x-5$
$\int\left(\frac{x^2+5x+2}{\left(x+1\right)\left(x^2-1\right)}\right)dx$
$4x^2+6=10x$
$5x^2+10xy\:=\:10x$
$a+-2b-\left[3+\left(5a-2b\right)-\left(7a+2\right)\right]$
$\frac{1}{csc\left(x\right)-1}+\frac{1}{csc\left(x\right)+1}$
$-\frac{9}{12}-\left(-\frac{7}{4}\right)$
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