$30w^2-64z^2$
$\log_x\left(2x+8\right)=2$
$2^52^{-3}\left(2^7\right)^2$
$\frac{dy}{dx}\:\left(x^2+7\right)^x$
$2045.208+0957.010$
$xy+3x+y=6$
$\frac{3-r}{8}-\frac{2r+4}{5}$
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