$9x^2-9$
$4x-4=40$
$\lim_{x\to0}\left(7+x^{10}ln\left(x\right)\right)$
$\left(m+x\right)\:^2$
$\sqrt{2x}-3$
$\frac{3}{1o}+\frac{4}{15}$
$\lim_{x\to-3}\left(\frac{x^5+343}{x+3}\right)$
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