Suppose that $\displaystyle A = \left\{ -8, -\frac{2}{3}, -\sqrt{6}, 0, \frac{4}{5}, 9, \sqrt{36} \right\}$. Simplify the elements of $A$ as necessary and then list the elements that belongs to Rational numbers.
The rational numbers from the list are $\displaystyle \left\{ -8, -\frac{2}{3}, 0 , \frac{4}{5}, 9, \sqrt{36} \text{ or } 6\right\}$
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