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Prove the following using a proof by contrapositive For x yZ if xy2Z then x2Z or y2Z Prove the following using a proof by contrapositive:

Prove the following using a proof by contrapositive For x yZ if xy2Z then x2Z or y2Z

Prove the following using a proof by contrapositive: For x,yZ, if xy2Z, then x2Z or y2Z.

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