$\left(x^{2a}-7\right)\left(x^{2a}+10\right)$
$g+62=37$
$4a^3w+20a^2w^2+25aw^3$
$\frac{dy}{dx}=\left(x^2+4x-7\right)\left(4x^3-3x\right)$
$36-6\cdot5$
$\lim_{x\to-2}\left(\frac{\sqrt{x^2-2x+1}-\sqrt{2x^2+1}}{x^2-4}\right)$
$4x\:\left(2x\:+\:\:3y\:-\:9z\right)\:$
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