Why is the product of two rational numbers always rational? Select from the drop-down menus to correctly complete the proof. and represent two rational numbers. This means a, b, c, and d are Let ас irrational numbers , and b and d are not 0. The product of the numbers is where bd' ас bd is not 0. Both aC and bd are Choose... and bd is not 0. Because bd is the ratio of two Choose... the product is a rational number.

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