$8f+2g$
$\tan\left(x\right)+\cos\left(x\right)\tan\left(x\right)+1$
$\lim_{x\to5}\left(\frac{v-2-\sqrt{x^2-32}}{x-9}\right)$
$7x+21x^2$
$\frac{6x^3-7x^2+2x+2}{x+1}$
$2\sqrt{\frac{x^2}{2}+x+\frac{1}{2}}$
$2a^2+9a\:-5$
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