$\frac{x^6-\:y^6}{x+y}$
$3x-6>7$
$-2q^2+28q=94$
$3\cot^3\left(x\right)+3\frac{1}{\tan\left(x\right)}^2+3\cot\left(x\right)+3$
$\frac{3xy^2-y^2}{y}$
$y^2+11y^3+30y^2$
$x^2+13x+45$
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