$\frac{tan\left(x-y\right)+tany}{1-tan\left(x-y\right)tany}$
$x^2-4x+3=2$
$\int x^{3\:}\left(x^2+4\right)^{0.5}dx$
$x-19=-33$
$x^2+26x+0$
$\left(-5x^2xy^72w^3\right)$
$\sqrt[3]{-65449.84}$
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