Find the union of the following sets, namely ${-1, -4 \sqrt{5}, \sqrt{5}, -\frac{3}{\sqrt{2}}, 4., -2 \sqrt{5}, 3 \sqrt{3}, 0} \cup {-1, 4 \sqrt{5}, 0, -4 \sqrt{2}, 3 \sqrt{3}, -4 \sqrt{5}, -2.5, -\sqrt{3}}$.
Answer:
${-4 \sqrt{5}, -4 \sqrt{2}, -2 \sqrt{5}, -2.5, -\frac{3}{\sqrt{2}}, -\sqrt{3}, -1, 0, \sqrt{5}, 4., 3 \sqrt{3}, 4 \sqrt{5}}$
{'source': 'AMPS', 'file': 'amps/mathematica/counting_and_statistics/set_union/7013.txt'}