Problem 108 of 7
Classify numeric expression (sqrt(5))(sqrt(20)) as rational or irrational.
Hints
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simplify expression before classifying.
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Expression must be simplifiable enough to classify exactly.
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Correct
Your answer is equivalent to the expected form.
Solution
Walkthrough
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1. Simplify radicals, products, and sums where possible.
2. Use closure and counterexample rules.
3. Classify the final simplified value.
Use the worked steps, then substitute the final answer back into the original relationship to confirm it satisfies the prompt.
Classifying from appearance before simplification.