$a^2-16a-64$
$\left(7d^2c\right)^4$
$41.042+87.5672+168.0012+301.8976$
$16+x=12$
$\lim_{x\to1}\left(\frac{lnx}{\pi\cos\left(\pi x\right)}\right)$
$\left(\frac{1}{5}x-y^2\right)^2$
$\left(2x-3y+xy\right)^2$
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