Verify that each of the following subsets is a subring of the given ring.(a) S = a 00 b
Chapter 14, Problem 14.9(choose chapter or problem)
Verify that each of the following subsets is a subring of the given ring.(a) S = a 00 b: a, b Rin the ring M2(R).(b) S = {a + b3 2 + c3 4 : a, b, c Q} in the ring R.
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