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(a)Suppose a is an irrational number .Prove that is an irrational num- ber. (b) Suppose that a is a rational number and that b

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(a)Suppose a is an irrational number .Prove that is an irrational num- ber. (b) Suppose that a is a rational number and that b is an irrational num- ber.Prove that a+b is an irrational number. (e) Prove that 2 does not divide n-2 if the integer n is odd.

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