$\left(y+\frac{1}{2}\right)\left(y-\frac{1}{2}\right)$
$\int xe^{-6}dx$
$2x^{-2}$
$\lim f_{x\to-2}\left(x\right)$
$4x^2-7x+1$
$7^9$
$\frac{d^2}{dx^2}\left(x^{-7}\right)$
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