$16w^2-40w+25$
$\ln\left(xy^2\right)$
$\lim_{x\to\frac{\pi}{2}}\left(\frac{\sin\left(x\right)+1}{2}\right)$
$\frac{\left(-222\right)}{2}$
$4x^2-7x-5=0$
$\int9\sec^2\left(x\right)\tan\left(x\right)dx$
$4+-13+-8$
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