SOLUTION: Is there a set of expressions that is closed under all four operations?

SOLUTION: Is there a set of expressions that is closed under all four operations?

Algebra.Com

Question 1020422: Is there a set of expressions that is closed under all four operations?
Answer by ikleyn(52787) (Show Source): You can put this solution on YOUR website!
.
The set of all rational functions of the form ,
where p(x) and (q(x) are polynomials.

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