Intermediate Algebra, Chapter 2, Cumulative Exercises, Section Cumulative Exercises, Problem 2

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 Whole numbers.

The whole numbers from the list are $\{ 0,9,\sqrt{36} \text{ or } 6\}$

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