$\left(-11\right)-\left(-5.6\right)$
$\int\frac{2}{x-2}dx$
$2sinx\:^2-3sinx\:-2=0$
$\log\left(x^2\right)-\log\left(\sqrt{y}\right)$
$-\left(-3\right)+\left(-16\right)-9-\left(-28\right)$
$23^a\:\cdot\:23^b$
$\int\frac{-9x^2+25x-66}{x^3-9x^2-22x}dx$
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