Question: Exercise 3. Let z be a nonzero rational number, and y be an irrational number. Prove, by contradiction, that ry 4 Q (ie. ry is

Exercise 3. Let z be a nonzero rational number, and y

Exercise 3. Let z be a nonzero rational number, and y be an irrational number. Prove, by contradiction, that ry 4 Q (ie. ry is irrational)

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