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Posted: **Thu May 12, 2022 8:00 am**

: 9 Let R A A 3b Let R A Bv3 A B E Z And R The 2 X 2 Matrices Where A B E Z 36 B A A Show That R Is 1 (165.13 KiB) Viewed 27 times

9.) Let R ---- a a 3b Let R = {a + bv3 | a, b e Z} and R' the 2 x 2 matrices where a, b E Z. 36] .b a a. Show that R is a subring of R. b. Show that R' is a subring of M2(Z). a 3b C. Show that º: R -- R' by [a+bv3) = (a 35] + is a ring a isomorphism.