I need the answer as soon as possible

[8 .v] = [v. 8) = v Please Prove the identities with explanations. (M. A)n = [M. an] A(n. M) = [an.M] (A.3-20) (A.3-21) (A.3-22) (A.3-23) (uv:wz) = (uw:vz) = (uz)( vw)