Mattsaman2538 Mattsaman2538
  • 25-08-2017
  • Mathematics
contestada

Is the difference between two irrational numbers always irrational?

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ghanami
ghanami ghanami
  • 25-08-2017
hello : 
let two irrational numbers : a = 3 + √5    and  b = 3 - √5 
the difference is : a -b = (3 + √5) -  (3 - √5 ) = 0
but zero is not irrational number
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