$99+2$
$\frac{2a-6b}{\sqrt{a}+\sqrt{3}b}$
$a^3-b^3-5a^2b+4ab^2+a^3-7ab-b^3$
$8\cdot13mn^2$
$2p^2+14p+24$
$8\:.\:-75$
$\left(\frac{x}{3}+\frac{xy}{2}\right)\left(\frac{x}{3}-\frac{xy}{2}\right)$
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