$\left(x+2\right)^2+\frac{1}{2}\left(3+x\right)\ge\left(x-1\right)\left(x+1\right)$
$7x^2-27x-40$
$\left(wk+8\right)\left(wk-5\right)$
$\left(3a+5b^2\right)\left(3a-17b^2\right)$
$\int\frac{ln^5x}{7x}dx$
$\frac{\sin\left(-x\right)\cos x}{\tan x}$
$\mathrm{\frac{x}{x-3}\ge\:\:0}$
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