Answers

2015-09-21T14:09:44+05:30
Root 2+2=root 2+2
which is an irrational no.
but root 2+root 2=2 root 2 which is also an irrational number 
but 2+2=4 which is rational number 
and that why rational+rational=rational
irrational+rational=irrational and irrational+irrational is also irrational
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