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OpenStudy (philcua):
can rarional numbers be closed by division pleas answer
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OpenStudy (philcua):
rational i meant lol
OpenStudy (anonymous):
im pretty sure rational numbers can be closed under subtraction, addition, multiplication AND division ...
OpenStudy (anonymous):
by a nonzero rational ..
OpenStudy (philcua):
how about -1 0 1 can they be closed
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