$5x-2<6x-20$
$12x^2-14x=-5$
$m+m^3-2m$
$\left(9ax^2+1\right)^2$
$\left(x+6\right)-\left(2x\\:+7\\:\right)-\\:3x\\:=\\:-9$
$\lim_{x\to5}\left(\frac{\sin\left(x\right)-\sin\left(5\right)}{x-5}\right)$
$81b^2-36d^4$
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