$\frac{1}{\pi}\int_{-\pi}^{\pi}\left(x\cdot\cos\left(nx\right)\right)dx$
$-7x^{3-1}$
$\frac{2}{x^3\sqrt{x^2-4}}$
$\left(-3^5\right)^8$
$16x^6-8x^3y+y^2$
$w^2-3w-350=0$
$6^6\cdot6^6$
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