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Posted: **Thu May 12, 2022 12:59 pm**

: 9 Let R A Bv3 A B Z And R The 2 X 2 Matrices 36 B E 16 Where A B E Z A Show That R Is A Subring Of R B 1 (223.31 KiB) Viewed 27 times

9. Let R = {a + bv3|a, b € Z} and R' the 2 x 2 matrices 36) |b E 16 where a, b E Z. a. Show that R is a subring of R. b. Show that R' is a subring of M2(Z). Q C. Show that o: R = R' by ©(a+by3) = C. 3) is a ring isomorphism.