Rational & Irrational Number For a - b

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Set 1.1

Give an example of irrational numbers a
and b such that the indicated expression is (a) rational and (b) irrational.

Note: The above instructions are given for problems 56, 57, and 58. David Cohen did not include a subtraction problem for this set of instructions.

I made up the problem a - b.

Let me guess. I must subtract b from a to yield a rational number and also an irrational number.

Yes?
 

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