If xy is rational, must either x or y be rational? A) Yes; because the product of irrationals cannot be rational. B) No; because the product of two irrationals can also be rational. C) No; because the product of a rational and an irrational can also be rational. D) Yes; because the product of a rational and an irrational can also be rational.
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D) because sometimes product of two rational can be irrational or rational it depends on the variable
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