$\left(x-1\right)\left(3x+8\right)$
$a^2-121b^2$
$\left(\sqrt{7+p^2}\right)^2$
$x^2-5x+50$
$\frac{2}{5}g-\frac{3}{5}+\frac{1}{10}g$
$-6b^2-5b^2$
$2+\tan^2x+\sec^2x=2$
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