$20+90+514$
$600+68$
$-11x^2+22x-10.4$
$r-9+10$
$\int\left(\frac{2x-1}{\left(x+1\right)^2\left(x-2\right)^2}\right)dx$
$x^2-22x=-121$
$4x+1\sqrt{16x^2+48x-13}$
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