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Posted: **Thu May 12, 2022 9:07 am**

: 3b 9 Let R A Bv3 A B E Z And R The 2 X 2 Matrices S Where A B E Z A Show That R Is A Subring Of R B Sho 1 (30.22 KiB) Viewed 21 times

3b = ] 9. Let R = {a +bv3|a, b e Z} and R'the 2 x 2 matrices [s where a, b e Z. a. Show that R is a subring of R. b. Show that R' is a subring of M2(Z). ſa 3b c. show that o: R = R' by [a+bv3) = 1; 35] is is a ring isomorphism. b