$=\frac{2}{x+1}+3$
$\left(-x+3\right)\left(x^2-5x+6\right)$
$3x+y=3$
$\frac{\tan\left(a\right)}{\cot\left(a\right)}=1$
$w^2-10w-25$
$7\:below\:0$
$-3mn\frac{3x}{7}-1$
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