lilmar9 lilmar9
  • 21-11-2018
  • Mathematics
contestada

Let a be a rational number and d be an irrational number. Then a + d is

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alessandroarenas
alessandroarenas alessandroarenas
  • 21-11-2018

Is an irrational number Why?

Suppose that a + b is a rational number, then is of the form p/q for some p, q integers and q different to 0.

So, b = p/q - a (That means, b is a rational number) a contradiction.


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