$-3x^2+\frac{4}{3}+\frac{2}{3}$
$\frac{cos\left(u\right)}{sin\left(u\right)}$
$62+49-1$
$\:83^2-\:10^2$
$3\left(\frac{3}{4}m+\frac{2}{3}n\right)\left(\frac{3}{4}m-\frac{2}{3}n\right)$
$\left(x-8\right)\left(x-14\right)$
$-23x^2+68x+3=0$
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