$z^2+\frac{2}{3}z+\frac{4}{6}$
$\frac{x^4+3x^2+2x-5}{x+3}$
$\lim_{x\to\infty}\left(\frac{x^2+7}{x^5+x^4+3x-2}\right)$
$-ln\left(x+1\right)-\frac{ln\left(x\right)}{x+1}+ln\left(x\right)$
$64x^3-343$
$\tan\left(x\right)\csc\left(x\right)-\tan\left(x\right)\sin\left(x\right)$
$\left(8+x^4\:\right)\left(\sqrt{8}+x^2\:\right)\left(\sqrt[4]{8}+x\right)\left(\sqrt[4]{8}-x\right)$
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