Mathematics, 25.07.2019 17:30, selenaK9514

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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If xy is rational, must either x or y be rational? a) yes; because the product of irrationals can...