$\left(\sqrt{12}+\sqrt{3}\right)^2-\left(\sqrt{3}-\sqrt{12}\right)^2$
$\int_0^{2\pi}\left(tcos\left(\frac{1}{2}t\right)\right)dt$
$\left(2va\right)^3$
$x^2-13x-90$
$x^2-2+6$
$\int\frac{5}{\sqrt{t^2-4}}dt$
$x-7=8$
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