Let R(1) and R(2) be two relation de...

Let `R_(1) ` and `R_(2)` be two relation defined as follows : `R_(1) = { (a,b) in R^(2) , a^(2) + b^(2) in Q}` and `R_(2) = {(a,b) in R^(2) , a^(2) + b^(2) cancel(in)Q)` where Q is the set of the rational numbers. Then:

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