$\int x^{-8}dx$
$a+8^2$
$\lim_{x\to0}\left(\frac{2x+tan\left(4x\right)}{5x-tan\left(4x\right)}\right)$
$x^2+6x-6=10$
$x^2+2x-3;\:x=1$
$15+7y+y+4+y+4+3y+5$
$5x^2+12x+3=0$
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