$\sqrt{2-2cosx}$
$\int\frac{-x+4}{x^2+7x+10}dx$
$\left(2x+1\right)\left(3x-1\right)$
$\left(2-6-3\right)-\left(2-4-6\right)$
$\frac{4}{3}-2x<-15$
$\int\frac{x}{\left(\left(x-1\right)\left(x^2+2x+2\right)\right)}dx$
$m^2-2mn-3^2$
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