$\int2\:\sin\left(x\right)\cos\left(x\right)\:dx$
$\int sec\left(e^x\right)tan\left(e^x\right)e^xdx$
$2x^2-4x+1>0$
$x^2-13x-45<\:0$
$\frac{x^2-7x+10}{x^2-9x+20}$
$6m^2+13m-5$
$\frac{\left(x^3-x^2+3x-9\right)}{\left(x-2\right)}$
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