Evaluate
3\sqrt[5]{2}-5\sqrt{5}\approx -7.734244823
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3\sqrt[5]{2}+3\sqrt{5}-8\sqrt{5}
Combine \sqrt[5]{2} and 2\sqrt[5]{2} to get 3\sqrt[5]{2}.
3\sqrt[5]{2}-5\sqrt{5}
Combine 3\sqrt{5} and -8\sqrt{5} to get -5\sqrt{5}.
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