Mathematics, 08.09.2019 00:20, ohgeezy

12. a. check that rx s is indeed a ring. b. check that if r and s are commutative rings, then rxs is a commutative ring. 1. is rx s ever an integral domain?

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12. a. check that rx s is indeed a ring. b. check that if r and s are commutative rings, then rxs is...