$8\left(2w-2\right)$
$16b^2-169c^6$
$\int_4^9\left(\frac{1}{\left(x-4\right)^2}\right)dx$
$\sec\left(240\right)\cos\left(240\right)\tan\left(240\right)$
$\frac{x^2+4x-21}{x+3}$
$7\:x\:\left(-5\right)$
$\int\frac{1}{9+e^{-3x}}dx$
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