$x^2+7x-1=0$
$-6^2$
$\cos\left(-x\right)\:\:=\frac{1}{2}$
$\left(a^1\right)^4$
$\lim_{x\to3}\left(\frac{\sqrt{x}-\sqrt{3}}{x^2}\right)$
$\left(9\right)\left(7\right)\left(10\right)$
$\int e^{2x}\left(3x-1\right)dx$
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